730 THE ICE AGE IN NORTH AMERICA. 



E. H. L. Schwarz; "The Three Paleozoic Ages of South Africa," 

 "Journal of Geology," vol. xiv, pp. 683-691. 



A. C. Scott; "A Brief Summary of Glacier Work," "American 

 Geologist," vol. xxx, pp. 215-261. 



N. S. Shaler; "Tertiary and Cretaceous Deposits of Eastern Massa- 

 chusetts," "Bulletin of the Geological Society of America," vol. i, 

 pp. 443-452; "Evidences as to Changes of Sea-Level," ibid., vol. vi, 

 pp. 141-166. 



W. H. Sherzer: "Glaciers of the Canadian Rockies and Selkirks," 

 (Wash. Smithsonian Institution, 1907); "Ice work in Southeastern 

 Michigan," "Journal of Geology," vol. x, pp. 194-216; "Nature and 

 Activity of Canadian Glaciers," "Canadian Alpine Journal," vol. 

 i. pp. 249-263. 



B. Shimek: "Additional Observations on the Surface Deposits in 

 Iowa," "Proceedings of the Iowa Academy of Science," vol. iv, pp. 

 68-72; "Is the Loess of Aqueous Origin," ibid., vol. v, pp. 32-45; 

 "The Lansing Deposit not Loess," "Bulletin of the Laboratory of 

 Natural History of Iowa State University," vol. v, pp. 346-352 ; "Loess 

 and the Iowan Drift," ibid., vol. v, pp. 352-368; "The Loess and 

 the Lansing Man," "American Geologist," vol. xxxii, pp. 353-369 

 "The Loess of Iowa City and Vicinity," ibid., vol. xxviii, pp. 344-358 

 "The Loess of Natchez, Mississippi," ibid., vol. xxx, pp. 279-299 

 "Nebraska Loess Man," "Bulletin of the Geological Society of 

 America," vol. xix, pp. 243-254. 



C. E. Siebenthal; "Notes on Glaciation in the Sangre De Cristo 

 Range, Colorado," "Journal of Geology," vol. xv, pp. 15-22. 



F. W. Simonds; "Reply to Some Statements in Professor Tarr's 

 'Lake Cayuga a Rock Basin'," "Ameiican Geologist," July, 1894. 



T.B. Smyth; "The Buried Moraines of the Shunganunga[Kanas]," 

 " Transactions of the Kansas Academy of Science," vol. xv, pp. 

 95-104; "The Closing of Michigan Glacial Lakes," ibid., vol. xv, pp. 

 23-27. 



J. W. Spencer; "Deformation of the Algonquin Beach and Birth 

 of Lake Huron," "American Journal of Science," January, 1891; 

 ''High-Level Shores in the Region of the Great Lakes, and their 

 Deformation," ibid., March, 1891 ; "Deformation of Lundy Beach and 

 Birth of Lake Erie," ibid., March, 1894: "Duration of Niagara Falls," 

 ibid., December, 1894; "The Rock Basin of Cayuga Lake, and the 

 Age of Niagara Falls," "American Geolgist," August, 1894; "Post- 

 Pleistocene Subsidence versus Glacial Dams," "Bulletin of the Geo- 

 logical Society of America," vol. ii, pp. 465-476; "A Review of the 

 History of the Great Lakes," November, 1894; " Origin of the Basins 

 of the Great Lakes of America," "Quarterly Journal of the Geological 

 Society," vol. xlvi, pp. 523-533; "Niagara as a Timepiece," "Popular 

 Science Monthly," May, 1896, pp. 1-19; "An Account of the Re- 

 searches Relating to the Great Lakes," "American Geologist," vol. 



