IV AI>VERTISEMENT. 



29. On tlieFresh- Water luvertebratesoftlie North American Jurassic, by Charles A. White. 1886. 



8^. 41 pp. 4 pi. Price 5 cents. . , ^i , 



30. Second Contribution to the Studies on the Cambrian Faunas of Xorth America, by Charles 

 Boolittle Walcott. 1886. 8^. 369 pp. 33 pi. Price 25 cents. 



31. Systematic Keview of our Present Kno^wledge of Fossil Insects, including Myriapods and 

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32. Lists and Analyses of the Mineral Springs of the United States; a Preliminary Study, by 

 Albert C. Peale. 1886. S^, 235 pp. Price 20 cents. 



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 Moliuscau 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 pp. Price 10 cents. 



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 P. Ward. 1887. 8*^. 354 pp. 57 pi. Price 26 cents. 



38. PeridotiteofEUiottCounty, Kentucky, by J. S.Diller. 1887. 8^. 31pp. Ipl. PriceScents. 



39. The Upper Beaches and Deltas of the Glacial Lake Agassiz, by Warren Upham. 1887. 8^. 

 84 pp. 1 pi. Price 10 cents. 



40. Changes in Riyer Courses in Washington Territory due to Glaciation, by Bailey Willis. 1887. 

 8^. 10 pp. 4 pi. Price 5 cents. 



41. On the FossP. Faunas of the Upper Devonian—the Genesee Section, New York, by Henry S. 

 Williams. 1887. 8o; 121pp. 4pL Price 15 cents. 



42. Reportof Work done in the Division of Chemistry and Physics, mainly during the Fiscal Year 

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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. S^. 

 04 pp, Price 10 cents. 



46. Nature and Origin of Deposits of Phosphate of Lime, by R. A. F.Penrose, jr., with an Intro- 

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47. Analyses of Waters of the Yellowstone National Park, with an Account of the Methods of 

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48. On the Form and Position of the Sea Level, by Robert Simpson Woodward. 1888. 8^. 88 

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49. Latitudes and Longitudes of Certain Points in Missouri, Kansas, and New Mexico, by Robert 

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50. Formulas and Tables to Facilitate the Construction and Use of Maps, by Robert Simpson 

 Woodwar^. 1889. 8^, 124 pp. Price 15 cents. 



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 

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53. The Geology of Nantucket, by Nathaniel Southgate Shaler. 1889. 8^. 55 pp. 10 pi. Price 

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54. On the Thermo-Electric Measurement of High Temperatures, by Carl Barus. 1889. S^, 

 313 pp., incl. 1 pi. 11 pi. Price 25 cents. 



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. S^. 96 pp. Price 10 cents. 



56. Fossil Wood and Lignite of the Potomac Formation, by Frank Hall Knowlton. 1889. 8^. 

 72 "pf. 7 pi. Price 10 cents. 



57. A Geological Reconnoissance in Southwestern Kansas, by Robert Hay. 1890. 8'^. 49 pp. 

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58. The Glacial Boundary in Western Pennsylvania, Ohio, Kentucky, Indiana, and Illinois, by 

 George Frederick Wright, with an Introduction by Thomas Chrowder Chamberlin. 1890. 8^. 112 

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59. The Gabbros and Associated Rocks in Delaware, by Frederick D. Chester. 1890. 8^. 45 

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60. Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal 

 Year 1887--m F. W. Clarke, Chief Chemist. 1890. 8°. 174 pp. Price 15 cents, 



61. Contributions to the Mineralogy of the Pacific Coast, by William Harlow Melville and Wal- 

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62. The Greenstone Schist Areas of the Menominee and Marquette Regions of Michigan, a Con- 

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 with an Introduction by Roland Duer Irving. 1890. 8^^. 241 pp. 16 pi. Price 30 cents. 



63. A Bibliography of Paleozoic Crustacea from 1698 to 1889, including a List of North Amer- 

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64. A Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal 

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