xt7v416sz96t https://exploreuk.uky.edu/dips/xt7v416sz96t/data/mets.xml Kentucky. State Geologist. 1886 books b97-21-37317244 English J.D. Woods, Public Printer and Binder, : Frankfort, Ky. : Contact the Special Collections Research Center for information regarding rights and use of this collection. Geology Kentucky Bath County. Geology Kentucky Fleming County.Linney, W. M. (William M.) Reports on the geology of Bath and Fleming Counties / by W.M. Linney. text Reports on the geology of Bath and Fleming Counties / by W.M. Linney. 1886 2002 true xt7v416sz96t section xt7v416sz96t GEOLOGICAL SURVEY OF KENTUCKY. JOHN R. PRO(TERl, DIRECTOR. REPORTS ON THE GEOLOGY OF BATH AND FLEMING COUNTIES, BY W. M. LINNEY. .i'I'F''u I'II F1.R THE .' FT Hi .1011N f'. i -ensI, vt mi.s- INl'rEH AND I INn.t 'FRANKFO')RT, RI . This page in the original text is blank. GEOLOGICAL SURVEY OF KENTUCKY. JOHN R. PROCTER, DIRECTOR. R ED PORT ON THE GEOLOGY OF BATH COUNTY. BY W. M. LINNEY. STEREOTYPED FOR THE SURVEY BY JOHN D. WOODS, PUBLIC PRINTER AND BINDER, FRANKFORT, KY. This page in the original text is blank. INTRODUCTORY LETTER. Hon. John R. Procter, Director of the Kentucky Geological Survey: DEAR SIR: I hereby transmit to you reports on the geology of Bath and Fleiming counties. To the report on Bath county I have added, as an appendix, a record of the amount of rainfall occurring at Sharpsburg during the last twenty-six years. This record was kept by Mr. Jonathan Vanarsdall, and makes a val- uable addition to my report. My thanks are due to him and a large number of other gentlemen of those counties for favors shown during my work. Yours very truly, W. M. LIN NEY. HARRODSBURG, Ky., January, 1886. This page in the original text is blank. GEOLOGY OF BATH COUNTY. HISTORICAL, TOPOGRAPHICAL, ETC. Bath county was created by the act of legislation as one of the Kentucky counties in 1811; its territory being, until that time, a part of Montgomery. In 1869 a portion of its original territory was taken to aid irr the formation of Menifee. Bath is situated in the northeast-central part of the State. The Lick- ing river flows along its northeastern boundary, Menifee county is on its southeast, Montgomery on the southwest and Bourbon and Nicholas counties on the northwest. The topographical features are quite varied. Around Preston Station, and near tbe head of Flat creek, the county is level or gently undulating. Some tine rolling lands are situated along the ridge between little Flat and Flat creeks, and in some other parts of the county. Much of the surface is considerably broken-narrow ridge-3 a-ad deie-cut hollows, giving steep slopes, being the rule; while on the south- east side the hills become so high and abrupt that they might be called mountains. From some of these more elevated points far extended landscapes are presented to the view, and nearly the whole surface of the county can be seen from a single point. One does not easily forget or become tired of gazing from those hills over the plainlike surface of the blue-grass re- gion, lying towards the north, or from the hills around Owings- ville, at the panorama of mountains towards the south and east. The whole drainage system of the county finds its way into the Ohio through the Licking river. The latter stream has many 'The portion of Bath given to Menifee county was along its southern border and extended into the rocks of the coal formation. Any one reading the notes of Dr. David D. Owen, in the first series of reports on the geology of Bath county. should remember that the coal beds and part of the iron ores there mentioned are now in Men- ifee county. 6GEOLOGY OF BATH COUNTY. fine sites for the erection of mills and manufactories, but only a few of the former are built on its banks. During the high tides rafts of saw logs and a few barges of coal are floated down, industries which might be largely increased by intelligent enter- prise. Hinkston creek runs along the county line for some miles. Flat creek and Little Flat are in the northern part of the county. Slate creek, a beautiful but very crooked stream, having consid- erable water power, winds nearly through the center of the county. It has a large number of small branches which enter it from the north and the south. Farther to the south is Salt Lick creek, with its many small tributaries, all rising in the mountain region. Clear, Caney, two Indian and one Little Indian, Clover, Cow and other creeks find their way into the Licking. The county is thus well drained and supplied, except in times of severe drouth, with an abundance of fresh, flowing water, for stock and other purposes. The Chesapeake and Ohio railroad extends east and west through the south-central part of the county, and nearly the whole of the traffic and travel of the county is from the various stations along its line. At Olympia there is a track two and a half miles long, which extends to the Preston ore banks, and is psed altcgether in the shipment of iron ores. The northern part of Bath is EaIrly supplied with well-constructed turnpikes, but manyr Of the roads :n the southern portion are not macadam- ized, and in places are very rough and bad, especially in the win- ter season. The common school system has been better cared for than in many other counties, while higher schools have been maintained at Owingsville and Sharpsburg for a number of years. The county has an area of 275-k0 miles. or 176,064 acres of land, and in 1880 had a population of 11,982. Owingsville is the seat of justice, and contains about 1,000 people. It is beautifully situated on a ridge, between Slate and Prickly Ash creeks. There is, perhaps, no town in the State from which such interesting and extended views can be seen, and commanding such perfect drainage in every direction. Sharpsburg, Bethel and Wyoming are small villages lying in the northern part of the county; while, in the southern portion, Preston, Olympia and Salt Lick are stations on the Chesapeake and Ohio railroad. 6 GEOLOGY OF BATH COUNTY. 7 The following table gives the elevations of a number of points in the county, above the sea level, as well as the group of rocks upon which the various points are located. With the aid of the map, which exhibits the different formations as they are on the surface, and this table, the reader can obtain a good idea of the general topography and the unevenness or dip of the rocks as the county is traversed from northwest to southeast: Slate Creek, railroad level . . . . . . Mill Creek, railroad level ......... Mud Lick Creek, railroad level ....... Salt Lick Creek, railroad level . . . . .. Licking River, Farmer's Bridge, railroad level Preston, railroad level ... ........ Olympia, railroad level . Owingsville . Slate Creek. south of Owingsville ...... Prickly Ash Creek, north of Owingsville . . Ridge, northwest of Owingsville. Top of Carrington's Rock ......... Flat Creek, about ............. 750 703 656 650 668 741 751 995 688 735 1,020 1,396 650 Top of Upper Rudson. Upper Silurian. Upper Silurian. Upper Silurian. Black Slate. Niagara Shale. Niagara Shale. Niagara Shale. Upper Hudson. Upper Hudson. Upper Hudson. Conglomerate. Lower Hudson. GENERAL GEOLOffY. The general section of the rocks of the State is exhibited by the following diagram. Some of the figures are only approxi- mate, as the details are not yet complete: FEET. Tertiary and Quaternary...... .. . . .. . . . .. . . .. . . . 300 Coal Measures ..... . . . . . .. . . .. . . . .. . . .. . . . 2,000 Conglomerate. . .. . . . .. . . .. . . .. . . . .. . . . .. . . 2,000 Subcarboniferous.. . . . .. . . . .. . . .. . . .. . . . .. . . 1,200 Devonian. . . . .. . . . .. . . .. . . . .. . . .. . . . .. . . 235 Upper Silurian......... .. 285 Lower Silurian. . .. . . .. . . . .. . . .. . . . .. . . . .. . 1,375 Total... .. . . . .. . . .. . . . .. . . .. . . . .. . . . .I7,395 GEOLOGY OF BATH COUNTY. In order to obtain this result the maximum thickness of each of the various groups should be added together. In no one county of the State does one-half of this thickness show, and often only a portion of one single formation is to be seen. Bath county has far more than an average exhibition of the various geologi- cal divisions within its borders, and from this and other facts it is of a more interesting character than some others in the State. The various groups of stratified rocks here approximate about fifteen hundred feet, and, beginning with a portion of the Lower Silurian, they extend to and include part of the Conglomerate, which lies at the base of the Coal Measures. Nothing like the above thickness can be seen at any one point, but by beginning in the northwestern part of the county and passing to the southeastern border, we successively traverse the divisions in regular ascending order until we have reached the highest. The lowest rocks are to be seen in the northern part, in the valley of Flat creek, and the highest on top of Carrington's Rock. The whole system of rocks dip from the northern por- tion to the southeastern. This dip amounts to about seven hun- dred and fifty feet; so, while Carrington's Rock is only some seven hundred and fifty feet higher above the sea level than the valley of Flat creek, the rocks which show in Flat creek are some fifteen hundred feet beneath the top of the Rock, and this difference brings them beneath the level of the ocean. This inequality of the rocky strata of the county was pro- duced by a marked line of disturbance, which passes through the State from northeast to southwest, and where the rocks were elevated and displaced more than on either side of the line. This anticlinal passed through the county near its northern limit, and from it the rocks slope gently towards the northwest, but more strongly in the opposite direction. The dip is not regular, being greater at some points where the eye can tace it very plainly, and so slight at others that it requires nice study to determine it. In places there are short lines of minor disturbances in which the rocks can be seen to dip in opposite directions, either towards or from a given point. The details of the dips over a county form a very important study, as only by a knowledge of them can intelligent mining for coal, iron, clays, building stones, etc., be conducted; and the supplies of water from artesian 8 GEOLOGY OF BATH COUNTY. wells must be governed by a knowledge of their occurrence and persistence. The annexed table gives the grouping and vertical extent of the smaller, as well as the larger, divisions occurring in Bath county: Carboniferous. Conglomerate . Upper beds ............65 Subcarboniferous. Lower beds........ . 400 Black Slate........ . 135 Devonian. C5rniferous..... . .. . 12 Oriskany.... . .. .. . 3 Niagara.. .. . .. . .. 100 Upper Silurian. Clinton. 35 Medina... .. . .. .. . 10 Upper Hudson .350 Lower Silurian. Middle Hudson.175 Lower Hudson .40 Total . 170 465 150 145 565 1,495 It must be understood that these thicknesses must be approx- imate only, as the beds are not uniform in depth, being heavier sometimes on one side of the county than on the other. It is hoped that, with a careful study of the various groups as out- lined on the map, the following descriptions may be fully under- stood: LOWER SILURIAN. Only the upper part of the above great formation is exhibited in Bath county. The Chazy and Birdseye divisions are exposed in the cliffs of the Kentucky river at Camp Nelson, High Bridge and other points; the Trenton on the surface of Fayette, Wood- 9 GEOLOGY OF BATH COUNTY. ford, Jessamine and other counties, but the Hudson only here, where the three beds are represented, the Lower in part and the Middle and Upper entire. Lower Hudson.-These beds have a thickness of two hun- dred feet, all of which is shown in a large number of counties in Central Kentucky. In Bath they do not rise to the surface of the county at any point. Near the mouth of Lick Branch the tops of them are at the water's edge in the Licking river, and may be traced down the river to the Nicholas line, where they are some forty feet above the stream. They may also be seen along Hinkston, where it makes the county line, and up Flat and Lit- tle Flat creeks, for some miles. These beds have been described in several reports on the counties of Central Kentucky, and to give a detailed description of them here would only be a repeti- tion of words. A few points will be mentioned, while the reader is referred to reports on Garrard, Mercer and Nelson counties. The lower part of these beds is composed largely of shaly limestones and shales, the types of which can be seen in the banks of the Licking river, near the Upper Blue Lick Springs. The upper portion is of heavier, harder limestones, with but lit- tle admixture of shale. This solid character is so persistent that the top can nearly always be traced, where shown in this county, by the bench of resistent rocks which outcrop along the margin of the streams. The rocks above are softer, and conse- quently wear away faster than these, giving a different character to slopes. The great wave marks, which are everywhere, at this horizon, so noticeable, retain their character and persistency with much uniformity, so that, whether seen in Madison, Wash- ington, Spencer or Bath, they present the same unvarying features. Some of these layers of limestone make a fair article of build- ing stone, and have been used for bridge masonry, founda- tions, fences and other purposes. The upper part is usually very rough bedded, and from this fact unfitted for any struct- ural purposes. Where the conditions are favorable, springs issue from the line of the upper part, the close texture not allowing the water to pass below before it finds its exit from their surfaces. The exposures are so limited that the series here 10 GEOLOGY OF BATH COUNTY. does not give any distinctive soils, as those derived from these rocks are mixed from the decay of. those that overlie them, and for the same reason the timbers are not characteristic. Kiddle Hudson.-These beds which, in the earlier volumes of the Kentucky geological reports, received the name of Sili- cious Mudstones overlie the Lower Hudson, and are to be seen making up the principal slopes on the Licking river, from Day's Mill down to its northern extension with the county. On Hink- ston creek and along the greater part of the drainage of Flat and Little Flat they have an aggregate thickness of one hundred and seventy-five feet. They here give quite a margin of out- crops but never rise entirely to the upper, general surface of the country. The lower layer is composed of a massive concretionary rock of blue silicious limestone from which, on exposure, the lime largely leaches away, leaving a light silicious rock of a light brown color. These blocks often fall from exposures and look like so many huge kidneys composed of enveloping folds. One, and sometimes two, other layers of analogous character are seen in the series, and the composition of some of the even layers is of the same chemical character. Layers of gray and blue limestones come between them, some of which are even, and others rough bedded. Some of these are hard and resist- ing and do very well for foundations and fences, and a part of the sandy layers are often used with them. More than half of the series is made up of sandy or clay shales; these decompose easily, as do most of the harder layers. In the shales are quite a large per cent. of potash, and there is more than an ordinary proportion of phosphate of lime in some of the layers. The soils are, therefore, of a good character, and only need the care that an intelligent study of them should give, to keep them in fine condition. That they may be exhausted by injudicious culture, and ignorance of their character, is illustrated in too many cases. With careful protection against excessive waste, judicious subsoiling and a return, in part, of the vegetable matters grown to these soils, would keep them valuable for many years. Some of the best soils around Sharpsburg are based on these rocks, and they have obtained a deserved reputation where they have remained in possession of owners who knew how to treat them. 11 12GEOLOGY OF BATH COUNTY. Often, with quite steep slopes, these soils are easy to culti- vate, but too often the tendency is to plough them in such a way that they are literally washed away. It would be advisable to re-forest many of the greater slopes, or plant in orchards, be- cause they could thus be better protected than by yearly culti- vation. Some kinds of fruit succeed well on them, and the growth of every plant is rapid. By an examination of the notes on this series, contained in the reports mentioned under the Lower Hudson, it will be seen stated that the Middle beds in the State were largely covered with a forest of beech trees. On Hinkston there seem to have been but a limited number of trees of this species, but along the Licking and on Flat creek it was a very common tree in places. The other trees which characterized these beds in the county were largely yellow poplar, chinquapin oak, black wal- nut and sugar maple. The forests have been largely destroyed, and few trees of any great value remain. Where circumstances are favorable young trees spring up and grow with much rapidity. Upper Hudson.-This division lies on top of the last beds mentioned, and makes up a larger part of the surface of the county than that of both the Lower and Middle beds combined. On this group are based the finest and most desirable lands in Bath. Near Bethel, Sharpsburg, and towards the head of Flat creek, part of the lands lie comparatively level, and the county is rich and beautiful. Over other portions there are small areas which lie well, but over much of it the country is either steeply rolling or else much broken. The total thickness is about three hundred and fifty feet, and near the Licking river, opposite Day's Mill, a section is exhibited of three hundred and thirty feet. The Middle beds disappear under the river, near this point, and from the water level to the top of the county only the Upper beds are present. The section is composed of blue and gray limestones, in large part. Some shales come between some of the layers, and a few courses are brownish on exposure, containing some magnesia. The larger part of the limestones are, however, in the condition of carbonates-some quite pure, while others contain variable proportions of earthy matters. In a section recently exposed a 12 GEOLOGY OF BATH COUNTY. part of these beds show a very massive character, but in a few years they-break down by crumbling and exfoliating into thin splintering layers. This is especially true of those parts of the beds so largely made up of the fossil remains of the ancient life, whose shells and other parts make up so large a proportion of these rocks. One large shell, about the size of a hulled walnut, with rough ribs-the orthis lynx-ranging nearly through all the strata, is the most persistent and noticeable of them all. One horizon is well marked, through the county, by being very rough bedded and containing large masses of a sponge- strornatapora-specimens of which are often seen isolated from the rocks which weigh more than a hundred pounds. Through the part drained by Lower Indian creek the rocks are much broken into rectangular blocks, and these cover the surface in such profusion that it is impossible, in some places, to plough the land. The same condition is to be seen, on a smaller scale, across the county toward the west. This feature is due to its be- ing on the line of the greater disturbance, and the immense force exerted here caused remarkable fractures along a contin- uous line. The extreme upper parts of these beds contain some sand in the clay shales, and from this reason are more inclined to wear away more easily. This, in part, accounts for the superi- ority of the lands on the Bethel ridge over those on the ridge between Flat creek and Prickly Ash. Some of the farming lands based on the steeper slopes of this division have been very badly treated. The soils have been ploughed and left in such condition that they have been washed away, leaving only a chaos of rocks to cover the ground. This treatment has been worse in past years than more recent- ly. Evidences are presented on many sides which show that, at least in part of the county, more interest has been given to the preservation and improvement of these lands, and that quite a number of farms, which were formerly considered as worn out, have been largely restored to fertility. A number of analyses of the separate soils of the three di- visions of the Hudson period have been made by the State Chemist, Dr. Robert Peter; from them the following table is compiled: 13 GEOLOGY OF BATH C(ANTY. _ o 0 0 Organic andvolatile matters..... . .. . .. . . 5.089 4.778 7.895- Alumina and iron and manganese oxides .6.782 7.064 8.664 Lime carbonate..192 .101 .543 Magnesia... . .. . .. .. . .. . .. .. . .. .332 .05 .665 Phosphoric acid..166 .165 .369 Potash, extracted by acids..180 .;55 .31& Sand and insoluble silicates.... . .. .. . .. . . 87.005 86.551 81.690 Total... . .. . .. .. . .. . .. 100.000100.000100.000 These results are from the average analyses of a number of soils, virgin and worn, and the subsoils beneath them. Those of the Upper Hudson were selected from Bath county, the others from several counties where the Lower and Middle Hudson are prominent and distinctive. As the latter show in this county quite a uniformity with the conditions present in other counties, they may be taken as fair representatives of the Lower and. Middle Hudson of Bath county. It will be seen from the table that the soils of the Upper Hud- son have a much larger percentage of organic and volatile mat- ters than is found in either of the other classes. This can be readily seen everywhere, in passing over the country, by the darker color of the soils. It is an important feature, and teaches us the necessity of furnishing to them organic waste by the turning under of certain crops, as a supply to every field. The proportion of potash, phosphoric acid and lime are also largely in excess in these soils, and on these elements is based their excellent character. As both the Lower and Middle beds contain these substances in a necessary proportion, if they are in an available condition, it may be seen that the Upper beds are especially rich in these substances. Many of the commercial fertilizers, being com- posed largely of combinations whose worth depends upon pot- ash and phosphoric acid, would be of little or no benefit here. This is one of the most important facts which can be brought before the farmers living on soils based upon the Hud- 14 GEOLOGY OF BATH COUNTY. son formation. Thousands of dollars have been so spent on these soils without any return, and, without the intelligent edu- cation of the agriculturist on this subject, a few more years will see hundreds of thousands dissipated in the same way. That all of these soils could be materially benefited by more thorough culture, by deep ploughing, harrowing and rolling, producing a lighter and thoroughly mixed soil, admits of no doubt. Much in agriculture depends upon the mechanical condition of the earth, and it is a well-established fact that few farms which have been cultivated for any number of years have enough of organic matters in their soils. In freshly cleared lands the soils, from the presence of dead wood and roots and the rotten leaves, are dark and loose, warm and dry; the plough runs easily and the crops grow rapidly. In the course of prolonged cultivation this organic matter is removed in part as plant food, and in part by the leaching out by the waters which percolate through the earth. The soils then be- come less productive and more difficult to work. Where the lands are in grass and grazing takes the place of cultivation, or the grains or their refuse are fed on the land, or returned as manures, the removal is not so rapid as where all the crops are taken away from the fields. The changes which result in soils by the exhaustion of or- ganic matters can be seen on every side in the continuous changes in many of them to lighter colors, and a consequent toughness and coldness. Where fields have had a sod of grass, or a crop of clover, rye or other green crop ploughed under, the rotting of these matters returns organic matters to the land, and the improvement in color, composition and richness can be directly seen. In Kentucky too little of this kind of treat- ment has been followed. This is the proper way, and in a large measure, the only thing necessary to restore the soils on the Hudson group to a fair share of fertility. One thing is very evident, in many parts of the State, in seed- ing the lands to grass, not enough seed is sown to the acre, and the number of grasses are too few. If farmers would sow plenty of seed and several other grasses with their clover and timothy, they might be assured of better stands; and while some might fail, yet the others would grow all the better. Often this 15 1GEOLOGY OF BATH COUNTY. failure to sow enough results in having a worthless pasture or in losing a year without any return. The soils derived from the wasting away of the lower rocks of the Upper Hudson are the richest in Bath county. These soils were marked here, as elsewhere in the State, with a forest composd largely of blue ash, chinquapin oak, sugar maple, wild cherry, hackberry, Kentucky coffee tree and some other species. The natural soil is quite dark, often nearly black, and very fria- ble. The Upper portions contained white oak, red oak, black oak, walnut, black hickory, scattering beech and other kinds. The fossils, which everywhere in the Ohio Valley mark these beds, are to be seen in great profusion at many of the outcrops. The great masses of columnaria alveolata are not in such pro- fusion as in the counties more to the west, but may be seen at several places on Slate creek. Here they are about seventy-five feet below the top of the Hudson. Orthis occidentalis, orthis lynx, orthis subquadrata, pterina demissa, streptelasma cor- niculum, tetradium minus and other forms are to be collected in numbers. Slate creek cuts down into these beds, and the hill-sides are often very rich, while some very desirable bottoms are found on it and the Licking river. At the mouth of Slate creek the action of these streams, with their currents cutting against each other, have eroded a broad valley in the soft layers in the Upper Hudson. Here in places is to be seen an upper bottom, formed while those streams ran at a higher level than they occupy to-day. UPPER SILURIAN. The Upper Silurian is one of the great geological formations, being, in places, thousands of feet in thickness. In Kentucky it is quite limited in its distribution and the depth of its beds. Three only of its divisions are present in the State, and all added together only amount to something like three hundred feet. The Medina, the Clinton and the Niagara periods all have a limited representation in Bath county; the Clinton being the most important, as well as interesting, from the presence, here, of an iron ore peculiar to the group. Medina.-The Medina is here composed of ten feet of rocks which contain some lime and clay, as well as a variable propor- 1B GEOLOGY OF BATH COUNTY. 17 tion of sand. On fresh surfaces they are bluish, but on expos- ure they are changed into a dirty yellow. These rocks here are thin bedded, and have between them more or less shale; all these break down rapidly when exposed, and form, sometimes, bare places covered with a yellow sand which marks the Medina everywhere in its outcrop in the State. This sand is unlike any other. A number of plant-markings cover the surfaces of some of the layers, and usually there can be found casts of a few fos- sils derived from the Hudson beds, in some of the strata, or at least the species are the same. The exposures of these rocks are only a few yards wide, and of no particular importance, ex- cept to exhibit the extension of the group. Clinton.-The series of rocks, shales and ores, which make up the division named the Clinton period, are of wide extent and of much importance. In Bath county they have a maximum thickness of about thirty-four feet. They are variable in their bedding, thinning out in one place and thickening in another. This is due here more to the amount of shales between the rocky layers than to any other cause, although the solid parts are not often even-bedded themselves. An average section of these beds would be nearly represented by the following details: SECTION OF THE CLINTON IN BATH COUNTY. Thin limestones and shales... . Limestone . Shale . Limestones . Shales and thin limestones. ..... Iron ore.......... .. . .. Thin limestone. ........ Limestone layer. .......... Wave-marked layer...... . . . Thin limestones...... .. .. shales . Heavy limestones with chert. Total. . . FT. 2 0 1 4 2 1 1 3 6 9 34 I -. I. 0 10 9 11 0 0 0 0 3 0 0 0 9 2 .. .. . .. .. . .. .. . .. .. . .. .. . .. .. . .. .. . .. .. . .. .. . GEOLOGY OF BATH COUNTY. The heavy layers at the bottom range from five feet, on the western side of the county, to nine feet on the eastern, are mas- sive and rough bedded, and filled with large quantities of flinty nodules and masses. Where the limestones have broken down, these nodules, whole or in fragments, cover the ground and are mixed in the soil in large quantities. The limestones are rather a grayish blue, often mottled with light tints of greenish blue and yellow. Though largely of lime, they contain some magnesia, and enough iron to give them a yellow color on exposure. The limestones above are of nearly the same composition, though some of them have sand in them. The shales are blue and soon melt down, on exposure, to a stiff, tenacious clay. Three of these beds are very persistent in their relations--the wave-marked layer, the iron ore and the heavy beds with chert. These are to be seen at nearly every outcrop, and about the same distance in- tervening between them, the wave-marked layer coming in about ten or twelve feet above the chert bed, and the iron ore four feet above that. This wave-marked rock is very even, and, as we have said, persistent in its character. First seen in Montgom- ery county, it extends through Bath and Fleming into Lewis. It is from ten to fourteen inches in thickness, marked with ridges from four tosix inches in height and about twenty-six inches from crest to crest. The ridges are not a regular curve, but are somewhat sharpened at the top. This layer and the chert bed are invaluable guides in determining the place of the bed of iron ore above. The bed of iron ore which is shown in the section is part of a wide extended deposit, being known in Wisconsin, New York, Pennsylvania, Virginia, Tennessee, Alabama, Ohio and Ken- tucky. It has received a number of names-as dye-stone, flax- seed, fossil, lenticular and concretionary ore. It was called Clinton ore from its presence in the Clinton group of New York, and is by this name most generally known. It is a hematite or red ore, but, where it is exposed, changes into a yellowish limonite. It is largely composed of little rounded and flattened grains, which are often due to t