IV ADVERTISEMENT. 



29. On the Fresli-water Invertebrates of the North American Jurassic, liy Charles A. White. 1886. 

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

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

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

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33. NotesoutheGeologyufNorthcni(';iliniruia,byJ.S.Diller. 1886. 8°. 23pp. Priceocents. 



34. On the Relation of the Laramie MoUiisiaii Fauna to that ofthe Succeeding Fresh-Water Eocene 

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35. Physical Properties of the Iron-Carburets, by Carl Barns and Vincent Strouhal. 1886. 8' . 

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36. Subsidenceof FineSolidParticlesinLiquidSjby CarlBarus. 1886. 8'^. 58pp. Price lOcents. 



37. Types of the Laramie Flora, liy Lester F.Ward. 1887. 8°. 354 pp. 57 pi. Price 25 cents. 



38. PeridotiteofElIicittCouiity, Kentucky, l)y.I.S.Diller. 1887. 8^. 31pp. Ipl. PriceScents. 



39. The Upper Beaches and Deltas of the (ilacial Lake Agassiz, by Warren U]>hani. 1887. 8'^. 

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40. Changes in River Courses in AVasliington Territory due to Glaeiatiou, by Bailey Willis. 1887. 

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41. On the Fossil Faunas of the Upper Devonian — the Genesee Section, New York, l)y Henry S. 

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

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43. Tertiary and Cretaceous Strata of tlie 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 ofthe Geology of Texas, by Robert T. Hill. 1887. 8°. 

 94 pp. Price 10 cents. 



46. Nature and Origin of Deposits of Phosjihate of Lime, by E. 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, ))y Robert 

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

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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 Decav 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. S°. 55 pp. 10 pi. Price 

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

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



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

 Y'ear 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"^. 

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57. A Geological Reconnoissance in Southwestern Kansas, by Robert Hay. 1890. S'^. 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 

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

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

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

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