122 BULLKIIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



17. 



White, C. A. On Coal in Nebraska, with reference to a paragraph in the Geological 

 Report of Dr. Hayden. <Ani. Jonr. Sci., 2d ser., vol. xlv., pp. :{y9-400. New 

 Haven, 18<>-'. 



The para^rapli refericd to is on i)age 12.j of the report of the Cotnmissionor of the General 

 Laml Olhce for the year 18G7. 



18. 



Whitk, C. a. Note on the shell- structure of certain Naiades. <Ani. Jour. Sci., 2d 

 ser., vol. xlv, pp. 400-401. New Haven, 1868. 



The outer prism.atic Layer of the shell is noticed as a family character, not ae a new discov- 

 eiy, as was supposed hj^ Meek. 



19. 



White, C. A. Note on "Cone-in-cone." <Aui. Jour. Sci., 2d ser., vol. xlv, pp. 401- 

 402. New Haven, 1866. 



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 Popular Letters contributed to the Newspapers of 

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

 originally contributed to Scientific 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 rei)rintcd 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. 14:3-155. Thirty separates printed without title-page, covers, 

 or repaging. 



The Drift lakes, includiii;; the so-called walled lakes, are described, and the origin of the 

 "walls" explained. Al.so the BluflF deposit of the Missouri River valley is shown to be the 

 deposit of an ancieni lake. 



22. 



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

 1869. 



The derivation of the drift material from the underlying rocks, by their disintegration and 

 comminution, is shown. 



23. 



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



vol. ii, pp. 644-65o. Saleui, 1869. 

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



covers, or repaging. 



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



24. 



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

 pp. 280-281. New Haven, 1^60. 



An experimont is desciibed, sliowiug that the sensitiveness which Unios manifest when the 

 sun's rays an- suddenly interci'ptod by an opaque body, is dtie to ^n interruption of light rays, 

 an4 ztot be*t rays. 



