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35. PliYsi<;il Properties of the Iron-Carburets, by Carl Barus and Vincent Strouhal. 1886. 8". 

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36. !>ul)si(liiiie(it'FineSolidParticlesinLi(iui(ls,by CarlBarus. 1886. 8"^. o8pp. PricelOcents. 



37. Types of the Laramie Flora, by Lester F. Ward. 1887. S"^. 354 pp. 57 pi. Price 25 cents. 



38. PeridotiteofKUiottCounty, Kentucky, by J. S.Diller. 1887. 8^. 31pp. Ipl. Price5cent8. 



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

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40. Changes in Kiver 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. 

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

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43. Tert ia ry and ( 'retaceous Strata of the Tuscaloosa, Tombigbee, and ,\labama Rivers, by Eugene 

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



45. The Present Condition of Knowledge of the Geology of Texas, by Robert T.Hill. 1887. 8°. 

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46. Nature and Origin of Deposits of Phosphate of Lime, by R. A. V. 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 

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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 

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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. 8^. 

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

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

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57. A Geological Eecomioissance 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 

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59. The Gal)bros 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 Mineralogy of the Pacific Coast, by AVilliam Harlow Melville and Wal- 

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62. The Greenstone Schist .\rcas of the Menominee and JIarc|Uettc 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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64. A Report of Work done in the Division of Chemistry and Physics, mainly during the Fiscal 

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65. Stratigraphy of the Bituminous Coal Field of Pennsylvania, Ohio, and AVest Virginia, by 

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66. On a Group of Volcanic Rocks from the Tewau Mountains, New Mexico, and on the Occur- 

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67. The Relations of the Traps of the Newark System in the New Jersey Region, by Nelson 

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68. Earthquakes in California in 1889, by James Edward Keeler. 1890. 8- . 25 pp. Price 5 

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69. A Classed and Annotated Biography of Fossil Insects, l>y Samuel Howard Scudder. 1890. 

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