136 THE UNITED STATES GEOLOGICAL SURVEY. [bull. 227. 
20. Contributions to the mineralogy of the Rocky Mountains, by Whitman Cross and 
W. F. Hillebrand. 1885. 8°. 114 pp., 1 pi. (Out of stock.) 
21. The lignites of the Great Sioux Reservation: A report on the region between the 
Grand and Moreau rivers, Dakota, by Bailey Willis. 1885. 8°. 16 pp., 5 pis. 
( Out of stock. ) 
22. On new Cretaceous fossils from California, by C. A. White. 1885. 8°. 25 pp., 
5 pis. (Out of stock.) 
23. Observations on the junction between the Eastern sandstone and the Keweenaw 
series on Keweenaw Point, Lake Superior, by R. D. Irving and T. C. Cham- 
berlin. 1885. 8°. 121 pp., 17 pis. (Out of stock.) 
24. List of marine Mollusca, comprising the Quaternary fossils and Recent forms from 
American localities between Cape Hatteras and Cape Roque, including the 
Bermudas, by W. II. Dall. 1885. 8°. 336 pp. 
25. The present technical condition of the steel industry of the United States, by 
Phineas Barnes. 1885. 8°. 85 pp. (Out of stock.) 
26. Copper smelting, by H. M. Howe. 1885. 8°. 107 pp. (Out of stock.) 
27. Report of work done in the division of chemistry and physics, mainly during the 
fiscal year 1884-85. 1886. 8°. 80 pp. 
28. The gabbros and associated hornblende rocks occurring in the neighborhood of 
Baltimore, Md., by G. H. Williams. 1886. 8°. 78 pp., 4 pis. (Out of 
stock. ) 
29. On the fresh-water invertebrates of the North American Jurassic, by C. A. White. 
1886. 8°. 41 pp., 4 pis. 
30. Second contribution to the studies on the Cambrian faunas of North America, by 
C. D. Walcott. 1886. 8°. 369 pp., 33 pis. (Out of stock. ) 
31. Systematic review of our present knowledge of fossil insects, including myriapods 
and arachnids, by S. H. Scudder. 1886. 8°. 128 pp. 
32. Lists and analyses of the mineral springs of the United States (a preliminary 
study), by A. C. Peale. 1886. 8°. 235 pp. (Out of stock.) 
33. Notes on the geology of northern California, by J. S. Diller. 1886. 8°. 23 pp. 
(Out of stock.) 
34. On the relation of the Laramie molluscan fauna to that of the succeeding fresh- 
water Eocene and other groups, by C. A. White. 1886. 8°. 54 pp., 5 pis. 
35. Physical properties of the iron-carburets, by Carl Barus and Vincent Strouhal. 
1886. 8°. 62 pp. 
36. Subsidence of fine solid particles in liquids, by Carl Barus. 1886. 8°. 54 pp. 
(Out of stock.) 
37. Types of the Laramie flora, by L. F. Ward. 1887. 8°. 354 pp. (no pp. 118- 
348, but instead pis. 1-57), 57 pis. 
38. Peridotite of Elliott County, Ky., by J. S. Diller. 1887. 8°. 31 pp., 1 pi. 
(Out of stock.) 
39. The upper beaches and deltas of the glacial Lake Agassiz, by Warren Upham. 
1887. 8°. 84 pp., 1 pi. (Out of stock.) 
40. Changes in river courses in Washington Territory due to glaciation, by Bailey 
Willis. 1887. 8°. 10 pp., 4 pis. (Out of stock.) 
41. On the fossil faunas of the Upper Devonian — the Genesee section, New York, by 
H.S.Williams. 1887. 8°. 123 pp., 4 pis. 
42. Report of work done in the division of chemistry and physics, mainly during the 
fiscal year 1885-86; F. W. Clarke, chief chemist, 1887. 8°. 152 pp., 1 pi. 
(Out of stock.) . 
43. Tertiary and Cretaceous strata of the Tuscaloosa, Tombigbee, and Alabama rivers, 
by E. A. Smith and L. C. Johnson. 1887. 8°. 189 pp., 21 pis. 
44. Bibliography of North American geology for 1886, by N. H. Darton. 1887. 8°. 
35 pp. 
