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23. Observations on the .Junction between tho Eastern Sandstone and the Keweenaw Series on 

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24. List of Marine Mollusca, comprising the Quaternary Fossils and Recent Forms from American 

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25. The Present Technical Condition of the Steel Indnslxy of the United States, by Phineas 

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26. CiM>l»-i- Siiic-lting, by Henry M. Howe. 1885. 8-^. 107 pp. Price 10 cents. 



27. Kc|>i>rt dl' Work clone in the Division of Chemistrv and Phvsics, mainlvduring the Fiscal Year 

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28. The Galjbros and Associated Hornblende Roclts occurring iu the Neighborhood of Baltimore, 

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29. OntheFresh-Waterluvertebratesof the North American Jurassic, by 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 i)f the .Mineral Springs of the United States; a Preliminary Study, by 

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33. Notesou nii'(;,.()li)uyniX(>itli,in('alifornia,by,J.S.Diller. 1886. 8°. 23pp. PriceScents. 



34. On the Ki-liiioii oliln- [.aiamic MiiUuscauFaunato thatof the Succeeding Fresh-Water Eocene 

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

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36. SubsidenceofFineSolidParticlesin Liquids, bvCarlBarus. 1886. 8'=. .58pp. PrioelOcents. 



37. Tv]ics ofl lie Linninie Flora, by Lester F.Ward. 1887. 8-=. 3.54 pp. .57 pi. Price 25 cents. 



38. Peiiili)tit<(iri:ili(itt(;ouuty, Kentucky, by J. S.DiUer. 1887. 8^. 31pp. ipl. Price5cents. 



39. Tlie r]i|i.r l!i'aclii.s and Deltas of the Glacial Lake Agassiz, by Warren Upham. 1887. 8°. 

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40. Changes in River Courses in Washington Territory due to Glaciatiou, by Bailey Willis. 1887. 

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41. On the Fossil I'liiinns of the Upper Devonian — the Genesee Section. New York, by Henry S. 

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42. Reportof Work done lu the Divisiiui of Chemistry and Physics, miiinlv diiringthe Fiscal Year 

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43. Tertinrv :iii(l ( ictiiicoiis St rata of the Tuscaloosa, Tombigbee. and Alabnnia Rivers, bv Eugene 

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44. Bibliograi)liy ot North American Geology for 1886, by Nelson H. Diirton. 1887. 8'-\ 35 pp. 

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45. The Present Ccmdition of Knowledge of the Geology of Texas by Robert T. Hill. 1887. 80. 

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46. Nature iinil <iiiyiii of Deposits of Phosphate of Lime, bv R. .\. F. Penrose, jr.. with ;in Intro- 

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47. Amilyses nl' Waters of the Yellowstone National Park, witb an Account of the Methods of 

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48. On the F.n-m and Position of the Sen. Level, by Robert Simpson Woodward. 1888. 8°. 88 

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

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50. Fnrinulns iiud Tables to Fueilitate the CoiLstniction and Use of Maps, by Robert Simpson 

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51. On Invertebrate Fossils frmiM he Pacitic Coast, by Charles Abiathar White. 1889. 8-. 102 

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52. Suliai-rial Decay of Rocks nml tlrinin 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-Electrie Measurement of Iiii;h Temperatures, by Carl Barus. 1889. 8*^. 

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.55. Report of Work done in the )iyisin'! of Cheiiiistry and Physics, mainly during the Fiscal 

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56. Fossil Wood and Lignite of the Potomac I'ormation. bv Frank Hall Knowlton. 1889. 8'^. 

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57. .V Geologic.il b'cconiioissanee ill Southwestern Kansas, by Robert Hay. 1890. 8^. 49 pp. 

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58. The i.ilacial Boundary iu Western Pennsylvania, Ohio, Kentucky, Indiana, iind Illinois, by 

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59. The (jabbros and Associated Rocks in Delaware, by I rederick D. Chester. 1890. 8^. 45 ' 

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