II ADVERTISEMENT. 
1-653 pp., 105 pl. and maps; i-v, 1-861 pp., 118 pl. and maps; i-x, 1-756 pp., 102 pl. and maps; i-xii, 
1-642 pp., 1 pl.; 643-1400 pp. 
XIX. Nineteenth Aniual Report of the United States Geological Survey, 1897-98, Charles D. 
Walcott, Director. 1898. 8°. 6 pt. in 7 vol. 
MONOGRAPHS. 
I. Lake Bonneville, by Grove Karl Gilbert. 1890. 4°. xx,438 pp. 51pl. lmap. Price $1.50. 
II. Tertiary History ofthe Grand Canon District, with Atlas, by Clarence KE. Dutton, Capt., U.S. A. 
1882. 4°. xiv, 264 pp. 42 pl. and atlas of 24 sheets folio. Price $10.00. 
Ii. Geology of the Comstock Lode and the Washoe District, with Atlas, hy George F. Becker 
1882. 4°. xy, 422 pp. 7 pl. and atlas of 21 sheets folio. Price $11. ‘00. 
IV. Comstock Mining and Miners, by Eliot Lord. 1883. 4°. xiv, 451pp. 3pl. Price $1.50. 
V. The Copper- Bearing Rocks of Lake Superior, hy Roland Duer Irving. 1883. 4°. xvi, 464 
pp. 151. 29pl. and maps. ~ Price $1.85. 
VI. Contributions to the Knowledge of the Older Mesozoic Flora of Virginia, by William Morris 
Fontaine. 1883. 4°. xi, 144 pp. 54 1. 54 pd. Price $1.05. 
VII. Silver-Lead Deposits of Eureka, Nevada, by Joseph Story Curtis. 1884. 4°. xiii, 200 pp. 
16 pl. Price $1.20. 
VIIT. Paleontology of the Eureka District, by Charles Doolittle Walcott. 1884. 4°. xiii, 298 
pp. 241. 24 pl. Price $1.10. 
IX. Brachiopoda and Lamellibranchiata of the Raritan Clays and Greensand Marls of New 
Jersey, by Robert P. Whitfield. 1885. 4°. xx,338pp. 35 pl. Imap. Price $1.15. 
X. Dinocerata. A Monograph of an Extinct Order of Gigantic Mammals, by Othniel Charles 
Marsh. 1886. 4°. xviii, 243 pp. 561. S56 pl. Price $2.70. 
XI. Geological History of Lake Lahontan, a Quaternary Lake of Northwestern Nevada, by 
Israel Cook Russell. 1885. 4°. xiv, 288 pp. 46 pl. and maps. Price $1.75. 
XII. Geology and Mining Industry of Leadville, Colorado, with Atlas, by Samuel Franklin 
Emmons. 1886. 4°. xxix, 770. pp. 45 pl. and atlas of 35 sheets foo. Price $8.40. 
XIII. Geology of the Quicksilver Deposits of the Pacific Slope, with Atlas, by George F. Becker. 
1888. 4°. xix, 486 pp. 7pl. and atlas of 14 sheets folio. Price $2.00. 
XIV. Fossil Fishes and Fossil Plants of the Triassic Rocks of New Jersey and the Connecticut 
Valley, by John S. Newberry. 1888. 4°. xiv, 152 pp. 26 pl. Price $1.00. 
XV. The Potomac or Younger Mesozoic Flora, by William Morris Fontaine. 1889. 4°. xiv, 
377 pp. 180 pl. Text and plates bound separately. Price $2.50. 
XVI. The Paleozoic Fishes of North America, by John Strong Newberry. 1889. 4°. 340 pp. 
53 pl. Price $1.00. 
XVII. The Flora of the Dakota Group, a Posthumous Work, by Leo Lesquereux. Edited by 
F. H. Knowlton. 1891. 4°. 400 pp. 66pl. Price $1.10. 
XVIII. Gasteropoda and Cephalopoda of the Raritan Clays and Greensand Marls of New Jersey, 
by Robert P. Whitfield. 1891. 4°. 402 pp. 50pl. Price $1.00. 
XIX. The Penokee Iron-Bearing Series of Northern Wisconsin and Michigan, by Roland D. 
Irving and C. R. Van Hise. 1892. Ao, xix, 534 pp. Price $1.70. 
SOX, Geology of the Hareka District, Nevada, with an GER) by Arnold Hague. 1892. 4°. xvii, 
419 pp. 8pl. Price $5.25. 
XXI. The Tertiary Rhynchophorous Coleoptera of the United States, by Samuel Hubbard Scud- 
der. 1893. 4°. xi, 206 pp. 12pl. Price 90 cents. 
XXIL A Manual of Topographic Methods, by Henry Gannett, Chief Topographer. 1893. 49. 
xiv, 300 pp. 18pl. Price $1.00. 
XXIII. Geology of the Green Mountains in Massachusetts, by Raphael Pumpelly, T Nelson Dale, 
and J. E. Wolff. 1894. 4°. xiv, 206 pp. 23 pl. Price $1.30. 
XXIV. Mollusca and Crustacea of the Miocene Formations of New Jersey, by Robert Parr Whit- 
field. 1894. 4°. 193 pp. 24 pl. Price 90 cents. 
XXV. The Glacial Lake Agassiz, by Warren Upham. 1895. 4°. xxiy,658 pp. 38pl. Price $1.70. 
XXVI. Flora of the Amboy Clays, by John Strong Newberry; a P sthumous Work, edited by 
Arthur Hollick. 1895. 4°. 260 pp. 58pl. Price $1.00. 
XXVII. Geology of the Denver Basin in Colorado, by Samuel Franklin Emmons, Whitman Cross, 
and George Homans Eldridge. 1896. 4°. 556 pp. 31 vl Price $1.50. 
XXVIII. The ] Marquette Iron-Bearing District of Michigan, with Atlas, by C. R. Van Hise and 
W.S. Bayley, including a Chapter on the Republic Trough, by H. L. Smyth. 1895. 4°. 608 pp. 35 
pl. and atlas of 39 sheets folio. Price $5.75. 
XXIX. Geology of Old Hampshire County, Massachusetts, comprising I'ranklin, Hampshire, and 
Hampden Counties, by Benjamin Kendall Emerson. 1898. 4°. xxi, 790 pp. 35 pl. Price $1.90. 
XXX. Fossil Meduse, by Charles Doolittle Walcott. 1898. 40, ix,201pp. 47pl. Price $1.50. 
XXXI. Geology of the Aspen Mining District, Colorado, with Atlas, by Josiah Edward Spurr. 
1898. 4°. xxxv, 260 pp. 43 pl. and atlas of 30 sheets folio. Price $3.60. 
XXXV. The Later Extinct Floras of North America, by John Strong Newberry; edited by 
Arthur Hollick. 1898. 4°. xviii, 295 pp. 68pl. Price $1.25. 
In press: 
XXXII. Geology of the Yellowstone National Park, Part II, Descriptive Geology, Petrography, 
and Paleontology. by. Arnold Hague, J. P. Iddings, W. Harvey Weed, Charles D. Walcott, G. H. Girty, 
T. W. Stanton, “and F. H. Knowlton. 
