6 DAVENPORT ACADEMY OK NATl'RAI, SCIENCES. 



40. Davis, M. W. History of Johnson County, Iowa City, 1883. 



Davis and Col. Trowbridge are quoted regarding the groups of 

 mounds of the county, and some remains and reUcs. particu- 

 larly a complete vessel of pottery, are described. 



4t. Dean, Seth. Smithsonian R., 1881, 528. 



"Antiquities of Mills County." Circular depressions in bluffs, 

 and mounds near Glenwood. 



42. Donaldson, Thos. Smithsonian R., 1885, pt. 2, App., pp.. 13-39. 



" The (jcorge Catlin Indian (Gallery." Catlin's outline pictures 

 of Sacs and Foxes are here reproduced, with his observations 

 upon the tribe. Some notes regarding their present condi- 

 tion are added. 



43. DoRSEY, J. O. Transactions Anthropological Society^ vol. ii. 



" Gentile System of the lowas." 



44. Evans, S. B. Smithsonian R., 1879, 344. 



" Notes on Some of the Principal Mounds of Des Moines Val- 

 ley." Diagram 1 shows five locations near Ottumwa. Dia- 

 gram 2 shows locations of shell-heaps and mounds near 

 Keosauc^ua. Explorations of mounds described. 



45. . Chicai^o TiJHcs. 



" Mounds of Des Moines Valley." Occasional papers on this 

 subject during 1879 and 1880. 



46. Ottumwa Democrat. 



Occasional papers from 1870 onward. 



47. Western Scientist, vol. i. 



"Mounds of Des Moines Valley." (Magazine published at 

 Ottumwa. Crawford, editor.) 



48. Evans, S. B. History of Wapello County, Chicago, pp. 336-342. 

 Articles in Smithsonian Reports and Chicago Times are here 

 quoted. The same article also appears in the History of 

 Van Buren County. 



