IV ADVERTISEMENT. 



29. On the Fresh-'water Invertebrates of the North American Jurassic, by Charles A. White. 1886. 

 8°. 41 pp. 4 pi. Price 5 cents. 



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

 little Walcott. 1886. 8°. 369 pp. 33 pi. Price 25 cents. 



31. Systematic Review of our Present Knowledge of Fossil Insects, including Myriapods and Arach- 

 nids, by Samuel Hubbard Sciulder. 1886. 8^. 123 pp. Price ].'> cents. 



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

 C. Peale. 1886. 8°. 235 pp. Price 20 cents. 



33. Kotes on tlie Geology of Korthern California, by J. S. Uiller. 1886. 8^. 23 ]ip. Price 5 cents. 



34. On the Relation of the Laramie Molluacan Fauna to that of tlie Succeeding Freshwater Eocene 

 andother Croups, by Charles A. AVhite. 1886. 8°. ,=i4 pp. 5 pi. Price 10 cents. 



35. Physical Properties of the Iron-Carburets, by Carl Parua 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, l)y Lester F.AVard. 1887. 8°. 354 pp. 57 pi. Price 25 cents. 



38. Peridotite of Elliott County, Kentucky, by J. S. Diller. 1887. 8°. 31 pp. 1 pi. Price 5 cents. 



39. The Upper Peaches and Deltas of the Glacial Lake Agassiz, by "Warren Upham. 1887. 8°. 84 

 pp. 1 pi. Price 10 cents. 



40. Changes in Kiver Courses in Washington Territory duo to Glaciation, by Bailey Willis. 1887. 

 8°. 10 pp. 4 pi. Price 5 cents. 



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

 Williams. 1887. 8°. 121 i)p. 4 pi. Price 15 cents. 



42. Report of A\'ork done in the Division of Chemistry and Physics, mainly during the Fiscal Year 

 1885-86. F. AV. Clarke, Chief Cliemist. 1887. 8=. 152 pp. 1 pi. Price 15 cents. 



43. Tertiary and Cretaceous Strata of the Tuscaloosa, Tombigbee, and Alabama Rivers, by Eugene 

 A. Smith and Lawrence (;. .Johnson. 1887. 8°. 189 pp. 21 pi. Price 15 cents. 



44. Bibliography of Nortli American Geology for 1886, by Kelson H. Darton. 1887. 8°. 35 pp. 

 Price 5 cents. 



45. The Present Condition of Knowledge of the Geology of Texas, by Robert T.Hill. 1887. 8'^. 94 

 pp. Price 10 cents. 



46. Nature and Origin of Dei)08its 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 

 Analysisemployed, by Frank Austin Gooch and James Edward WhitHeld. 1888. 8°. 84 pp. Price 

 10 cents. 



48. On the Form and Position of the Sea Level, l)y Robert Simpson Woodward. 1888. 8^. 88 pp. 

 Price 10 cents. 



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

 Simpson "Woodward. 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 luvei'tebrate Fossils from the Pacilic Coast, by Charles Abiatbar White. 1889. S°. 102 pp. 

 l-l])!. Price 15 cents. 



52. Subai'rial Decay of Rocks and Origin of the Red Color of Certain Formations, by Israel Cook 

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

 cents. 



54. On the Thermo-Electric Measurement of High Temperatures, by Carl Barns. 1889. 8°. 313 pp. 

 incl. 1 pi. 11 pi. Price 25 cents. 



55. Report of Work done in the Division of Chemistry and Physics, m.ainly during the Fiscal Year 

 1886-'87. Frank Wigglesworth (Jlarke, Chief Chemist. 1889. 8^. 96 pp. Price 10 cents. 



56. Fossil Wood and Lignite of the Potomac Formation, by Frank Hall Kuowlton. 1889. 8°. 72 pp. 

 7 pi. Price 10 cents. 



57. A Geological Reconnaissance in Southwestern Kansas, by Robert Hay. 1890. S°. 49 pp. 2 pi. 

 Price .'"' cents. 



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

 Frederick Wright, with an Introduction by Thomas Chrcwder Chamberlin. 1890. S°. 112 pp., incl. 

 1 ]■!. fpl. Price 15 cents. 



59. The Gabbros and Associated Rocks in Delaware, by Frederick 1). Chester. 1890. 8°. 45 pp. 

 1 ]il. Price 10 cents. 



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

 1887-88. F. W. Clarke. Chief Chemi.st. 1890. 8°. 174 pp. Price 15 cents. 



61 . Contributions to the Mineralogy of the Pacific Coa-st, by William Harlow 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 tlie Subject of Dynamic Metamorpliisni in Eruptive Rocks, by George Huntington Williams ; 

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



