IV ADVERTISEMENT. 
33. Notes on the Geology of Northern California, by J. S. Diller. 1886. 8°. 23 pp. Price 5 cents. 
34. On the Relation of the Laramie Molluscan Fauna to that of the Succeeding Fresh-water Eocene 
and Other Groups, by Charles A. "White. 1886. 8°. 54 pp. 5 pi. Price 10 cents. 
35. Physical Properties of the Iron-Carburets, by Carl Barus and Vincent Strouhal. 1886. 8°. 62 
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36. Subsidence of Fine Solid Particles in Liquids, by Carl Barus. 1886. 8°. 58 pp. Price 10 cents. 
37. Types of the Laramie Flora, by Lester F. Ward. 1887. 8°. 354 pp. 57 pi. Price 25 cents. 
38. Peridotite of Elliott County, Kentucky, by J. S. Diller. 1887. 8°. 31pp. 1 pi. Price 5 cents. 
39. The Upper Beaches and Deltas of the Glacial Lake Agassiz, by Warren Upham. 1887. 8°. 84 
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40. Changes in Biver Courses in Washington Territory due to Glaciation, by Bailey Willis. 1887. 
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41. On the Fossil Faunas of the Upper Devonian— the Genesee Section, New York, by Henry S. 
Williams. 1887. 8°. 121 pp. 4 pi. Price 15 cents. 
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. Price 15 cents. 
43. Tertiary and Cretaceous Strata of the Tuscaloosa, Tombigbee, and Alabama Rivers, by Eugene 
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44. Bibliography of North American Geology for 1886, by Nelson H. Darton. 1887. 8°. 35 pp. 
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45. The Present Condition of Knowledge of the Geology of Texas, by Robert T. Hill. 1887. 8°. 94 
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46. Nature and Origin of Deposits of Phosphate of Lime, by R. A. F. Penrose, jr., with an Intro- 
duction by N. S. Shaler. 1888. 8°. 143 pp. Price 15 cents. 
47. Analyses of Waters of the Yellowstone National Park, with an Account of the Methods of 
Analysis employed, by Frank Austin Gooch and James Edward Whitfield. 1888. 8°. 84 pp. Price 
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48. On the Form and Position of the Sea Level, by Robert Simpson Woodward. 1888. 8°. 88 pp. 
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49. Latitudes and Longitudes of Certain Points in Missouri, Kansas, and New Mexico, by Robert 
Simpson W T oodward. 1889. 8°. 133 pp. Price 15 cents. 
50. Formulas and Tables to facilitate the Construction and Use of Maps, by Robert Simpson Wood- 
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51. On Invertebrate Fossils from the Pacific Coast, by Charles Abiathar White. 1889. 8°. 102 
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52. Subaerial Decay of Rocks and Origin of the Red Color of Certain Formations, by Israel Cook 
Russell. 1889. 8°. 65 pp. 5 id. Price 10 cents. 
53. The Geology of Nantucket, by Nathaniel Southgate Shaler. 1889. 8°. 55 pp. 10 pi. Price 10 
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54. On the Thermo-Electric Measurement of High Temperatures, by Carl Barus. 1889. 8°. 313 pp. 
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55. Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal Year 
1886-'87. Frank Wigglesworth Clarke, Chief Chemist. 1889. 8°. 96 pp. Price 10 cents. 
56. Fossil Wood and Lignite of the Potomac Formation, by Frank Hall Knowlton. 1889. 8°. 72 
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57. A Geological Reconnaissance in Southwestern Kansas, by Robert Hay. 1890. 8°. 49 pp. 2 pi. 
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58. The Glacial Boundary in Western Pennsylvania, Ohio, Ken tuck} 7 , Indiana, and Illinois, by George 
Frederick Wright, with an Introduction by Thomas Chrowder Chamberlin. 1890. 8°. 112 pp. incl. 
1 pi. 8 pi. Price 15 cents. 
59. The Gabbros and Associated Rocks in Delaware, by Frederick D. Chester. 1890. 8°. 45 pp. 
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60. Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal Year 
1887-88. F. W. Clarke, Chief Chemist. 1890. 8°. 174 pp. Price 15 cents. 
61. Contributions to the Mineralogy of the Pacific Coast, by William Harlowe Melville and Waldemar 
Lindgren. 1890. 8°. 40 pp. 3 pi. Price 5 cents. 
62. The Greenstone Schist Areas of the Menominee and Marquette Regions of Michigan, a Contri- 
bution to the Subject of Dynamic Metamorpliism in Eruptive Rocks, by George Huntington Williams; 
with an Introduction by Roland Duer Irving. 1890. 8°. 241pp. 16 pi. Price 30 cents. 
63. A Bibliography of Paleozoic Crustacea from 1698 to 1889, including a List of North American 
Species and a Systematic Arrangement of Genera, by Anthony W. Yogdes. 1890. 8°. 177 pp. Price 
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64. A report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal 
Year 1888-'89. F. W. Clarke, Chief Chemist. 1890. 8°. 60 pp. Price 10 cents. 
65. Stratigraphy of the Bituminous Coal Field of Pennsylvania, Ohio, and West Virginia, by Israel 
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