122 KULLEilN NO. 30, UNITED STATES NATIONAL MUSEUM. 



17. 



WiiiTK, C. A. Oil Coiil in Nebniska, with reference to a paragraph in the Geological 

 Report of J)r. Ilayden. <Am. Jour. Sci., 2d ser., vol. xlv., pp. ;599-40d. New 

 Haven, 18(i8. 



The paniurapli lefciicd to is on page 125 of the report of the Commissioner of the General 

 Land Ollice for the year 1867. 



18. 



White, C. A. Note on the shell- striictuie of certain Naiades. <Am. Jour. Sci., 2d 

 ser., vol. xlv, pp. 4U0-401. New Haven, 18(iS. 



The outer pri.sm.atic layer of the shell is noticed as a family character, not as a new discov- 

 ery, as was supposed by Meek. 



19. 



White, C. A. Note on " Cone-iu-coue." <^Aiu. Jour. Sci., 2d ser., vol. xlv, pp. 401- 

 402. New Haven, 1868. 



20. 



White, C. A. First and Second Annual Report of Progress by the State Geologist, 

 and the Assistant and Chemist ; on the Geological Survey of the State of Iowa; 

 together with the substance of P()])ular Letters contributed to the Newspapers of 

 the State during the years 1866 a,nd 1867, in accordance with law ; also extracts 

 originally contributed to Scientihc Journals as a part of the work of the Survey, 

 pp. 1-284. Des Moines, 1868. 



The brief first annual report (Entry No. 9) is reprinted in this volume, upon pages 5-8. 



21. 



White, C. A. Lakes of Iowa, Past and Present. <:^American Naturalist, vol. ii, pp. 



143-155. Salem, 1868. 

 Same. Salem, 1868, pp. 14;3-li:)5. Thirty separates printed without title-page, covers, 

 or repaging. 



The Drift lakes, including the so-called wiiUod lakes, are described, and the origin of the^ 

 "walls" explained. Also the Bluft' deposit of the Missouri River valley is shown to be the' 

 deposit of an ancient lake. 



22. 



White, C. A. The Iowa Drift. <American Naturalist, vol. ii, pp. 615-616. Salem, 

 1869. 



Tlio derivation of the drift material from the underlying rocks, by their disintegratwa and 

 comminution, is shown. 



23. 



White, C. A. A trip to the Great Red Pipestone Quarry. <Americau Naturalist, 



vol. ii, pp. 644-653. Salem, 1869. 

 Same. Salem, 1869, Bvo., pp. 644-653. Thirty separates printed without title-page, 



covers, or repaging. 



The quany, the region, and the formation which contains the pipestone, are described. 



24. 



White, C. A. Are Unios sensitive to light? <Am. Jour. Sci., 2d ser., vol. xlvii, 

 PI). 280-281. N(^w Haven, 1869. 



An experiment is described, showing tlial (lie sensitiveness which Unios manifest when the 

 sun's rays an^ suddenly intercepted by an opaque body, is due to m interruption of light rays, 

 and not .beat rays. 



