ain more or less tufaceous material. Their prevailing color is greenish and greenish-gray. They are apparently composed chiefly of materials derived directly or indirectly from volcanic Sources. In no case are pebbles of quartz or other granitic constituents found in either the sandstones or conglomerates. The exposures of strata in the first three or four hundred feet at the base are not good, and but few of the silicified trunks appear above the covering of vegetation. At the height of 500 feet, the occurrences become very numerous, and the great size and fine state of preservation of many of the trunks was a matter of much surprise. Prostrate trunks, 50 and 60 feet in length, are of frequent occurrence, and not a few of these are as much as 5 or 6 feet in diameter. The standing trunks are generally rather short, the degradation of the compact enclosing strata being so slow that the brittle trunks break down almost as fast as they are exposed. In many cases the roots are exposed, and may be seen penetrating the now solid rock with all the original ramifications. One upright trunk, of gigantic proportions, rises from the enclosing strata to the height of twelve feet. By careful measurement it was found to be ten feet in diameter, and as there is nothing to indicate to what part of the tree the exposed section belongs, the roots may be far below the surface, and we are free to imagine that there is buried here a worthy predecessor of the giant Sequoias of California. Although the trunk is hollow, and partly broken down on one side, the woody structure is perfectly preserved, the grain is straight, and the circles of growth distinctly marked. The bark, which still remains on the firmer parts, is four inches thick, and retains perfectly the original deeply lined outer surface. Specimens of the wood and bark were collected, but no microscopic examinations have been made. It is clear, however, that the tree was not a conifer. The strata which enclose this trunk are chiefly fine-grained greenish sandstones, indurated clays, and moderately coarse conglomerates. They have been built around it as it stood in comparatively shallow, but doubtless quiet waters. As would naturally be expected, these strata contain many vegetable remains branches, rootlets, fruits and leaves are extensively enclosed. One stratum of sandstone that occupies a horizon nearly on a level with the present top of the giant tree contains a great variety of the most perfectly preserved leaves. Such specimens as we were able to bring away with us have been submitted to Professor Leo Lesquereux for identification. They are found by him to belong to the Lower Pliocene or Upper Miocene, and correspond in a number of their species with the Chalk Bluffs specimens of Professor Whitney. They include Aralia Whitneyi, Magnolia lanceolata, Laurus canariensis, Tilia (new sp.), Fraxinus (new sp.), It will be observed that most of these species are new, which was also the case with the collection of Professor Whitney. It is also worthy of remark that none of the genera are identical with those of the Elk Creek locality previously mentioned. The stratigraphical relations of the two localities cannot easily be made out, as they are separated by fifteen miles of broken country in which the strata are ob scured by igneous flows and Quaternary drift. The Elk Creek strata are lower by fully one thousand feet. As far above the leaf-bearing horizon as I was able to ascend, the silicified trunks were very numerous and well preserved, and, by the aid of a field-glass, others could be detected in all parts of the cliff to the highest stratum. At another point, nearly a mile farther east, I climbed the rugged walls of the mountain for the purpose of examining a number of large trees that were visible from below. Trunks and fragments of trunks were found in great numbers and in all conceivable positions. In most cases the woody structure is well preserved, the trunks have a tendency to break in sections, and on the exposed ends, the lines of growth, from centre to circumference, can be counted with ease. In many cases the wood is quite completely opalized or agatized, and such cavities as existed in the decayed trunks are filled with beautiful crystals of quartz and calcite. Our party was so fortunate as to procure some very handsome specimens of amethyst and ferruginous quartz. It is a matter worthy of observation that nearly all of the beautiful crystals that occur so plentifully in this region have been formed in the hollows of silicified trees. The same fact has been noticed in regard to similar crystals in many parts of the West, and notably in the case of the smoky quartz of the Pike's Peak region in Colorado. The silicifying agents have been so unusually active in the strata of the Volcanic Tertiary that not only are all organic remains thoroughly silicified, but all cavities in the loosely bedded rocks and all fracture-lines in the strata are filled with chalcedony or other forms of quartz. On reaching the heavily bedded conglomerates of the upper third of the cliff, I found the trees still more perfectly preserved. Many of the trunks are twenty and thirty feet in height. Their roots are in most cases imbedded in the layers of finer grained materials, in which they grew, while the battered and branchless trunks are encased in the coarse conglomerates and breccias. These latter rocks are composed chiefly of basaltic fragments, many of which are of great size; there is, however, always enough tufaceous and other fine-grained mate- 1 part of the formations of this age were rearrial to fill in the interstices and act as a cement. ranged or sedimented in water. These beds are massive and irregular, and seem to have accumulated too fast to be thoroughly redistributed by the waters. Only the stronger trees of the forest seem to have withstood the fierce storms of rocks that must have prevailed at the period of their entombment, as the smaller trunks and branches are prostrate or totally destroyed. In most cases where upright trunks penetrate the entire thickness of an enclosing bed, the tops may be seen to terminate with the upper surface of that bed, as if causes had acted at the beginning of the deposition of the succeeding stratum to plane down the irregularities of the old surface. In due course of time, this succeeding stratum produced its growth of forest, which followed its many predecessors into the subterranean depths, and in its turn was buried by the rapidly accumulating conglomerates. This remarkable alternation of events seems, in a general way, to have been kept up from the beginning to the end of the period. The very precipitous character of the cliffs prevented me from reaching the upper part of the wall at this point, but I succeeded in making my way to the summit of the mountain at two other points, and found that everywhere the section was practically the same. On the opposite side of the valley the same conditions were observed: the fossil trees occur at the highest point reached, 3,000 feet above the river. The ranges that form the rim of this valley on the north and east reach an elevation of 11,500 feet, and as the conglomerates may be seen reaching and forming the loftiest summits without perceptible break or change of character, it is probable that they will be found to enclose the remains of forests throughout. On some of the higher summits to the east of Yellowstone Lake, similar stratified conglomerates contain silicified wood in a very fragmentary state. These conglomerates are composed mainly of basaltic and trachytic materials, but contain large quantities of fragments of sandstones and quartzites, which leads to the conclusion that portions of the earlier Tertiary strata have been broken up and ejected with the igneous products. It is quite probable that these strata were among the latter products of the Volcanic Tertiary age proper. They are generally found abutting against masses of unstratified igneous materials that probably mark the sites of islands which were doubtless volcanic centres. I find that as we recede from these centres of eruption the strata diminish very perceptibly in thickness and coarseness of materials, and have at the same time a very perceptible dip toward the surrounding valleys. One is at times led to suspect that portions, at least, of these beds are of sub-aerial formation, as is the case with extensive strata about the cones of modern volcanoes, but there are a multitude of facts that go to prove that the greater -Earthquakes would seem to be plentiful and wide-spread at present. A Reuter's telegram, of date Messina, June 17, states that continual shocks of earthquake, attributed to the volcanic action of Mount Etna, have oc curred in the neighborhood of Santa, Venere and Guardia, causing serious damage and considerable loss of life. Vesuvius is stated to be showing signs of activity. A distinct shock of earthquake is reported to have been felt on Monday at Tobermory, and other places in Mull in the Hebrides. The shock passed from north-east to south-west. On the 7th inst, an earthquake of short duration was observed at Nersailles at 10.55 P. M. There was a severe skock of earthquake in Costa Rica on the night of May 29. The cathedral and many of the principal buildings of San Jose were shattered, and much damage was done in other parts of the republic. editor, has now supplied (as we are informed) HILL'S KANSAS EXPLORATIONS.-During the past year Russell S. Hill, of Philadelphia, continued his explorations of the Loup Fork formation of Kansas and Nebraska. He obtained fine specimens of the large Mammals discovered last year, especially of Mastodon Campester and Aphelops fossiger, and added representations of groups not previously known from this horizon. He discovered the pharyngeal bones of Cyprinoid fishes, probably of the genus Alburnops, also salamanders and Anura. There are also Lacertilia and snakes, some of the latter Crotalidæ, as indi cated by the characteristic Maxillary bone, with its teeth. Specimens of Proceroulous furcatus, with a burr on the horn, show that this species did not differ from P. necatus in this respect; also that the P. ramosus is distinct from it, as a species. In Nebraska, Mr. Hill found the Ticholetus beds containing Leptanchenia, etc., occupying the place between the White River and Loup Fork formations, already assigned them. Amethysts and Gummite from N. C., at from 10c. to $5. Triphylite from Peru, Maine, some crystalized, 10c. to $1. Micaceous Hematite, from Superior Mine, Michigan, 10c. to $2. Banded Limonite, or wood ore, same locality, 10c. to $3. Leidyite, Deshong's Quarry, Delaware county, Pa., 25c. to $5. Anthophyllite, Burlington, Conn., 10c. to 75c. Parties who are prompt in ordering books will almost invariably get what they order, but even if they do not, it is an advantage to them to order, as I am pretty certain to get what they wish, as I am buying more scientific books than any other dealer in the United States. Of course there are many books so rare that copies are only offered at long intervals. POSTAGE MUST BE PREPAID. As my books are so low that they go off very rapidly, parties at a distance will do well to send a secondary list to be selected from in case their first choice is already sold. Where a return of money in case of books sold is not specified, it will be held and a special effort made to get the books for customers. Often heretofore a special request to get the books as soon as possible has been made. Almost any text-book furnished at the publisher's price, even if not on my catalogue. PRICE LIST OF MINERALS, 16 pp. 3c. CATALOGUE OF MINERALS, 100 pp. ILLS., 25c. SAME, EXTRA LARGE HEAVY PAPER, 50c. 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Reports, cloth, 1, 13 vols., 25 00 Jame, good condition, Jame, fair condition, Jame, half calf, nearly new, jame, half calf, good condition, lame, calf, good as new, jame, morocco, good as new,. 20 00 15.00 25.00 20 00 30 00 35 00 For contents of the 13 vols. Pacifics, See April LEISURE IOUR. To the working naturalist these volumes are ndispensable. The ZooLOGIST cannot afford to do vithout 8, 9, 10 and 12, part 2. Every GEOLOGIST and MINERALOGIST needs 2, 3, 5, 6 and 7. Every BOTANIST needs 2, 4, 5, 6 and 7. Every ethnologist ought to have , 3, 4 and 12. Every engineer wants 1, 2, 3, 4, 5, 6, 7, 11 and 12, part 1. They contain many monographs and thousands of illustrations that can be found nowhere else. Baird's monographs on birds reptiles and mammals and Girard's monograph on fishes are worth double the price asked. ABBREVIATIONS.-The details given are fuller than those of most dealers, but the margin charged is so small that to reduce the expense of advertising, the following abbreviations are used:-pp. for pages; or hf. half; hef. half calf; sp. sheep; hsp. half sheep; hrn. half roan; hmor. half morocco; unb. unbound; p. paper cover; bds. boards; ed. edited, or edition; red. revised edition; 1. large; no. number or numbers; op. out of print; *small; † imperfect or incomplete; U. S. United States; V. volume or volumes. In dating 18 is omitted as 1879, 79, if no date is given it is usually before 1860. f. calf; mor. morocco; rn. roan; Rus. Russia; fig. figure or figures; il. illustrated, illustrations; pl. plates; "for same author or title, as in preceding number, exzept as specified; hrus. half russia; mrb. marbled; col. colored; 1 nearly new; 2 good as new, except cover; 3 good condition; 4 good condition, except cover; 5 good condition except soiling or staining of a few leaves; 6 good condition except soiling or staining; 7 good condition, except a few leaves torn; 9 good condition, except a few leaves or plates gone. The condition is always specified, unless omited by mistake, or there is some defect about the book that would take too much space to specify. ABBREVIATIONS.-A. P., Am. Philos. Soc. Proceedings. -Ar., Arkansas Survey, Owen.-B., Boston Soc. Nat. Hist. Proc.-B. J., Boston Journal of Nat. Hist.-C., Canada Geol. Survey,-E., Emory, Abert, Cook and Johnson, N. Mex. and Cal.-F. & W., Foster & Whitney, Lake Superior Region.-Gi., Gilliss, U. S. Naval Astronomical Exped.-H., Hayden's Surv. of the Terr.-H. B., Hayd. Bulletins.-H. L., H. in Land Office Report.-H. M., H. Miscellaneous Papers.-I., Ives. Colorado River of the West.-Ind., Indiana State Sur., Cox.-L., Ludlow, Recon. Black Hills and Yellowstone Park.-M. Mass., Hitchcock's Zool., Geol. and Scenery of.-N. H., New Hampshire Sur., Hitchcock, et al.-N. J., N. Jersey, Cook's Geol. Sur.-O., Ohio State Sur.-Ow., Owen, Sur. of Wisc., Iowa & Minn.-P., Perry, Japan Exp.-P. Ac., Phila. Acad. Nat. Sciences, Proceedings.-P. Ac. J., Same, Journal.-Pow., Powell's Surv.-P. R., Pacific R. R. Sur.-S., Sitgreaves, Zuni and Colorado Exped.-Sm., Smithsonian Inst. Annual Reports.-Sm. M. C., Same, Miscellaneous Collections. Sm. Cont., Same, Contributions.-U. S., United States Agric. Reports.-W., Wheeler's Sur.Wis., Wisconsin Geol. Sur. All books cloth, octavo or smaller, unless otherwise specified; 8 is octavo; 4to is quarto; F. French; G. German; L. Latin. To save space books are numbered by 10s and units; thus 3 is 18453, 18450 being the last ten, &c. Especial attention is called to the list of books previously catalogued of which I have recently bought other copies. The numbers will be found on another page. Where parties are willing to pay a little higher than my catalogue price, I can frequently get the books for them at the N. Y. and Phila. stores When parties are ordering books of me, they can have other books sent in same package, at about cost; any book that is on sale in N. Y. or Phila. procured, packed and shipped at dealers regular retail rates, without charge. Subscriptions taken for all scientific periodicals. It is believed that the prices on scientific and medical books are from a half to a third lower than those of any one else making a specialty of them. They are much lower than those of most dealers, even if they do not catalogue. This is mainly due to the fact that I do not wish to carry a stock of second-hand books. The NATURALIST'S LEISURE HOUR is sent free to all subscribing to the following journals through me. Boston J. Chem., M., . Bull. Brooklyn Ent. Soc., M., 12 pp. Psyche (Entomology), M. Bulletin of Nuttal Orn. Club, M. Am. Monthly Microscopical Journal, Iron Age,-W., Naturaliste Canadienne, W.. 115 The journals will be sent post-paid, but postage must be paid on the specimen L. HOUR and 75c. specimen with each of the following: American Journal of Science and Arts, $5 50 Popular Science Monthly,, Engineering, W., London, American Naturalist-M., Scientific American-W., 66 "" Supplement-W., Canadian Naturalist-M., Engineering and Mining Journal-W., Nature, W.. . 4275 . 4:00 875 8.00 POSTAGE MUST IN ALL CASES BE PREPAID. As not of my books are sent away by mail, I do not advertise the wt., and amount of postage, but books go by wt. at 1c. 2 ozs. Cost for quarto is 32c. average, for 8 vos. 18c. and books whose size is not specified, average 12c. I will willingly lay aside books and notify of the postage, when the price or the price is sent in advance Par ticular attention is called to the numbers published each month indicating the books previously catalogued that are now on hand. Geology. See also Travels and Surveys, and Americana, 19750 Agassiz L. Recherches sur les Poissons Fossiles, me, Livr, 152 PP, 4to, P, 1835, F, 1, I De Witt, Onondaga Salt Springs, 20 pp, 8, unb, 1801, 1, very rare, .50 2 Drake, Geol. of Ohio Valley, A. P. Tr. '25, 16 pp, pl, 1.25 3 Duralde, Fossil Bones in La. A. P. Tr. 1804, rare, .20 4 Eaton, Geol. about Devil's Lake, Wis. 8, unb, 71, new, .50 1.005 Eichwald, Halbinsel Mangischlak und die Aleutischen Inseln. 203 PP, 20 pls, many figs, 8, p, G, '71, 2, 2.00 6 Eaton, Geol. Text Book, 134 PP, 5 pls, 68 figs, 8, unb, '32, 3, rare edition, with additions, 1,00 75 Structure of Animal Life, 128 pp, ils, 8, '66, 1, " & Gould, Zoology, 250 pp, 170 il, '70, new, "Bibliographia Geologiæ et Zool, 4 vols, 2304 PP, 8, gilt, rare, 1. Ray Society, pub. 12.50 Same, Tableau General des Pois. Foss. 19 PP, 4to, P, 44, F, 1, .75 Monog. d'Echinodermes, 20 pp, 4to, unb, '45, F. 1;.50 Same, Nomina Systematica Generum Molluscorum, Viventium et Fossilium, 98 pp, 4to, p, F, '45, 1, Same, Le Genre Euryale, 51 pls, 4to, p, F, 1, "Succession des Poissons Fossiles, Neuchatel, 1843, 18 pp, 4to, p, F, 1, 1.50 1.50 .50 9 Same, Classification des Poissons, 4to, p, F, '44, 1, 1.00 19760 Ansted, Geol. 2 vols, 1116 pp, 383 ils, 8, rus, new, 2.00 Same, and Mineralogy, 611 pp, 234 ills, 8, 1, 1.25 .75 a Ashburner, Paleozoic Rocks, Pa. A. P. 77, 42 PP, 2.00 Bakewell, Geology, 632 pp, 9 pls, ils, 8, 3rd Am. ed. 1839, 4. 40; or 4th Lond, ed. cf, 1, 6 Bailey, Fossil Wood from Colo. P. R. '53, pl, 9 .75 .20 Beccheri, Physica Subterranea, etc. 1394 PP, pl, vellum, & Blake, Earthquake at San Francisco, B, '65, ,20 3 Gabb, W. F., Papers 8, p, or unb, new or 1. Catal. U.S. 4 Gabb and Horn, N. J. Cret. Corals, P. Ac. '60, .20 .75 9 Geologist, monthly, London, odd nos. to March, 1864, ea. 40 pp, il, 8, p, 1 or 3, 2.15 1.00 72 pls, 7 Geddes. Survey of Onondaga Co., N. Y., Geol, etc, 134 1.25 147 PP. .15 1.50 .20 19820 Geological Magazine, monthly, London, odd nos, to March, 1873, ea. 48 pp, il, 8, p, 1, .20 I Gibbes, Mosasaurus, Holcodus, Conosaurus, etc. 3 pls, 37 figs, 4to, unb, '49, op, new, rare, 1,25; or 3, 1,00 2 Same, New Myliobates from the S. C. Eocene, pl, 15 figs, 4to, P, 49, 3, 3 Same, U. S. Fossil Squalidae, Part 1, 4 pls, 51 figs, 4to, P, 48, 1, 75: Same, Part 2, 17 PP, 3 pls, 120 figs, 4to, P, 49, I, 8 Conybeare and Phillips, Geology of England and Wales, 1.00 1.00 Same, Basilosaurus, 5 pls, 31 figs, 4to, p, 47, 1, ,25 .30 2.00 7 Gilpin, Ancient Trop. Regions, 40 pp, 8, P, 2, .20 2,00 .75 1 Hall, Castoroides Ohioensis; and Wyman, Cranium of 1.50 3 Hall, J., Papers, 8, p. or unb, new or 1. New Fossils from Indiana, 54 PP. 263. .35: New Crinoidea, etc., 17 pp, '66, .20; Notes on a Section from Cleveland, 0, to Miss. River, 27 pp, pl, 41, 1.00; Markings on Rocks of N. Y. System, pl, 42, 1.00; Niagara Falls, Geol. 29 pp, map, 42, .50; Intestinal Plate in Crinoidea, B, '64. 6 Harlan, Papers, 8, unb, rare, 1835. Successive Formations of Organized Beings, 21 pp, new, .60; or 1, .35; Various N. Am. Organic Remains, 61 pp, 2 pls, new, .75: or 1,.50; F ssil Bones of Megalonyx, 18 pp, 5 pls, 34 figs, new,.75 or 3,.50; Ichthyosaurian Remains in Mo. pl, new, .35; or 6, .20; Basilosaurus from Ala. 3 col pls, new,.75 or 3, pls, torn, *25; N. Am. Fossil Elephant Teeth, pl, new, .50: or 3, .30, New Fossil Enalio and New Fossil Ichtbyosaurian, pl, new,.50; or6, .30; or the last 3 papers, new, .75; or 6, .50; Extinct Crocodile, and Geol. of W, Jersey, pl. new, .40; or 6, .25; Plesiosaurian Reliquiae from N.J. pl, new, .40; or 6, .25; or the last 2 papers, new, .60; or 6. .35; Extinct Vegetables of the Family Fucoides. 2 papers, pl, new, 1.00; or 6, .65; Nondescript N. Y. Trilobites, pl, new, 1.00; or 6, .65; or the last 3 papers, new, 1.50; or 6, 1.00; Geol. Sketch of Virginia Caves, new, 1.00; or 6, 65 Ceology. 8400 Barrande. Crustaces et Poissons Siluriens de la Bohême. 127 pp. 8, p. new, 1872. new, 1878. .25 .75 .25 6 Cotting, J. R., Lectures on Geol. 120 pp. 1. 6k Dana, Geol. and Min. of Boston, etc. 108 pp. bds. 8, 3, 1818, scarce. 1.00 1.50 1 Chamberlin, Wis. Kettle Moraine. 36 pp. maps, 8, p 2 Conrad, Geol. of Maryland with 29 new Fossils. Morton, Geol. of N. J. and Del.; Say, New N. A. Diptera and Hemiptera, etc. 66 pp. 3 pls. 41 figs. 8, p. 1. 8 Same. New Unio, etc. 8, unb. 3 pls. 1868, new. 4 Same. New N. C. Fossils. 28 pp. 3 pls. 57 figs. 8, unb. imp. .35 5 Same. Tertiary Fossil Shells of N. A. 65 pp. 16 pls. 8, unb. new, incomplete, .35, or 18 pls. .50 6 Same. 55 pp. 15 pls. 8, unb. new, incomplete. .20, or 14 pls. .20, or if pls. .15, or 4 pls. .10 7 Dana, J. D., Scientific Nomenclature. 8, p. new, 1846. .20 8 Dawson, Story of the Earth and Man. 417 pp. pls. and other ills. 8, 1875, new. 1.50 .25 9 Foulke, Fossil Reptile, N. J. 8, p. map, 1. $420 Emmons, Manual of Geology. 290 pp. many pls. 216 figs. 1, 1860. .90 1 Gabb, Conchological Scrap-Book. Recent and Fossil. 2 Index to Genera and MS. Notes, 8, unb. 54 pp. 106 col. and 373 other figs. 1. 2.50 3 Geological Magazine, Vol. I, 1864, 306 pp. 9 pls. other ilis, 8, 1. 2.50 4 Gosse, Nat. Hist. of Creation. 384 pp. ills. new. 5 Hall, Orthis Jamesi, etc. 8, p. 1859-60, 1. 1.60 .30 .25 22 pp. 6 Hays and Horner, Mastodon. 4to. unb. new. 7 Heer et Capellini, Phyllites Crétacées Nebraska, 4 pls. 30 figs. 4to. p. F. very scarce, 1866, 1. 1.25 8 Koninck, L. De, Monographie des Genres Productus et Chonetes. 263 pp. 20 pls. 417 figs. 4to. p. F. new. 8.50 9 Same. And Fossiles Carboniferères en Carinthie. 2 vols. 380 pp. 8 pls. 585 figs. 4to. p. F. new. 5.00 8430 Same. Et H. Le Hon, Crinoides Carbonifère et Genre Woodocrinus. 217 pp. 8 pls. 161 figs. 4to. hf rn. F. new. 5.00 .30 .75 6/ Dana, Some Points In Lithology. 20 pp. 8, p. new 1878. .25 6m De la Beche, Geol. Manual. 535 pp. ills. 3. 6n Eaton, N. A. Geology. 63 pp. col. map, 8, 3, rare. 60 Fairholme, Geol. of Scripture. 288 pp, hf ef. 1. 550 6p Foulke, Fossil Bones, Shells and Wood. map, 8, p, 1..20 6g Gabb, Peru Fossils in the Raimondi Collection. 74 pp. 9 pls. 112 figs. 1877, new, 2, scarce. 1.00 .50 1.60 .40 6r Godding, Int. to Geol. 141 pp. ills. hf shp. 2. 68 Gosse, Nat. Hist. of Creation. 376 pp. ills. new. 6 Hitchcock, Geology. 424 pp. 215 ills. col. maps, 1. 6u Same. Ichnology of New England. 106 pp. 20 pls. many photographic, 93 figs. 4to, 1865, new, 2.50, or 1. 1.50 6v Same. Geol. of Mass. 44 pp. pls. ills. col. map, 8, unb. 1853, 1, very rare. 1 Lancaster, Volcanic Manifestations in N. E. 4to. p. new, 1878, F. .25 1.00 86 Mather, Geology. 286 pp. ills. scarce, 1, .50, or ef. 2. .35 8c Meek, Invert. Cret. and Tert. Fossils. 678 pp, 45 pls. many hund. figs. 85 ills. 4to, 1876, 1. 4.00 1.50 2 Lyell, Coal-Field of E. Virginia. 28 pp. 3 pls. ills. 8, hf cf. new. very rare. 3 Miller, Hugh, Complete Works. 13 vols. comprising the following: Old Red Sandstone, Foot Prints of the Creator, Schools and Schoolmasters, Testimony of the Rocks, Edinburgh and its Neighborhood, Cruise of the Betsey, Sketch-Book of Geology, Headship of Christ, England and its People, Tales and Sketches, Scenes and Legends, Leading Articles and Essays. 5864 pp. 17 pls. 2 ports. ills. hf cf. new, very fine copy and binding. 8d Miller's, Hugh, Works. 8, 1,Old Red Sandstone, 310 pp. 10 pls. etc. 50 8e Same. Testimony of the Rocks. 570 pp. pl. 152 fla. .80 8f Same. Schools and Schoolmasters. 551 pp. port. 1.25 8g Same. Popular Geology. 423 pp. 1.00 8h Miller, S. A., Am. Palæozoic Fossils, 268 pp. imperial 8, new, 1877. 2.50 8i Same and Dyer, Cont. to Palæontology. 2 pla. 39 figs. 8, р. 1878, new. 25 20 50 & Page, Elements of Geol. 832 pp. ills, 2. 8k Page, Geol. Examinator. 40 pp. 8, p. 1. 8/ Parley, Wonders of Geology. 291 pp. ills. 1. 8m Rafinesque, Complete Writings on Recent and Fossil Conchology. Ed. by Binney and Tryon; Phila. 1864, .75, or p. 50 &n Ruschenberger, Elements of Geology. 235 pp, 810 ill. hf. shp, 2. 50 80 Schweitzer, Ph. D., Prof. P., Composition of Coal and Water Supply of Columbia, Mo. 38 pp. 8, p. new, 1875. .05 8p Smith, E. A., Geol. of Alabama. 69 pp. col. map, 8, p. new, 1878. 8q Smith, J. Pye, Scripture and Geol. 423 pp. 8, 2 .35 8r Steele, 14 Weeks in Geology. 280 pp. 122 ills. map, hf rn. 1871, 1. .60 1.00 8s St. John, Elements of Geol. 350 pp. 177 ills. 1864, 1. .75 & St. Petersburg Mineralogischen Gesellschaft, Verhandlungen. 1842-3, 132 pp. 8 pls. (4 col.) 8, 1, G. Bu Strickland, Sci. Papers, with Life, by Jardine. 622 pp. 2 ports.15 maps and sects.(some col.) 10 pls.large, 8,2. 3.50 Sv Van Rensselaer,Geology. 858 pp.8 unb. unc. scarce. 1.00 THE GEOLOGIST'S TRAVELLING HAND-BOOK, AN AMERICAN GEOLOGICAL RAILWAY GUIDE, giving the geological formation at every railway station, with notes on interesting places on the routes, and a description of each of the formations, by JAMES MACFARLANE, Ph. D., author of "The Coal Regions of America," and one of the commissioners of the second geological survey of Pennsylvania, with the co-operation of the State geologists, and other scientific gentlemen. Invaluable to every collector. 1879. Just out. Retail price, $1.50. My price $< |