XXX The Molluscan Family Planorbidae 



1917 



200. Notes on Acella haldemani (Desh.) Binney. Nautilus, 20:135-138. 



1918 



201. Further notes on the Mollusca of Oneida Lake, New York; the molhisks of 



lower South Bay. Op. cit., 31:81-93. 



202. A moHuscan garden pest. Science, 47:391-392. 



203. The animal world in a handful of algae. The Guide to Nature, 10:376-380. 



204. Notes on nidification in Gillia and Amnicola. Nautilus, 32:19-23. 



205. Description of a new variety of fresh-water mussel from Oneida Lake, New York. 



Appendix to New York State Coll. For.. Technical Publ., 9:247-248. 



206. The productivity of invertebrate fish food on the bottom of the Oneida Lake, 



with special reference to mollusks. Op. cit., 9:1-264. 



207. Post-glacial Mollusca from the marls of Central Illinois. Jour. Geol., 26(7) : 



659-671. 



208. The relation of shellfish to fish in Oneida Lake, New York. New York State 



Coll. For., Circular, 21:1-34. 



1919 



209. Description of a new species and variety of Planorbis from post-glacial deposits. 



Nautilus, 32(3) : 94-97. 



210. Mollusks infested with parasitic worms. Op. cit., 32(3) :97-98. 



211. The ecology of North American Lymnaeidae. Science, 49:519-521. 



212. A new species of Physa from New. York State. Nautilus, 33:11-13. 



213. Studies in aquiculture or fresh-water farming. Nat. Hist., 19:478-488. 



214. Molluska of the Crocker-Land Expedition to northwest Greenland and Grinnell 



Land. Bull. Amer. Mus. Nat. Hist., 41(11) :479-517. 



215. Fresh-water Mollusca from Colorado and Alberta. Op. cit., 41(13) :527-539. 



216. The Museum of Natural Historv of the University of Illinois. Trans. Illinois 



State Acad. Sci., 12:57-63. 



1920 



217. Animal life and sewage in the Genessee River, New York. Amer. Nat., 54:152-161. 



218. A new Planorbi.^ from Illinois. Nautilus, 33:123-125. 



219. A new form of Amnicola from the Ohio Pleistocene deposits, with notes on a 



Physa from the same formation. Op. cit., 33:125-127. 



220. Physa smithiana, new name for Phy.sa smithii. Op. cit., 33:142. 



221. The life of the Pleistocene or glacial period, as recorded in the deposits laid 



down by the great ice sheets. Univ. Illinois Bull., 17(41) : iv -f- 476 pages. 

 Urbana, Illinois. 



222. Pleistocene Mollusca from Indiana and Ohio. Jour. Geol., 28(5) :439-457. 



223. Animal life in loess deposits near Alton, Illinois, with descriptions of two new 



varieties of land shells from the same deposits. Nautilus, 34:61-66. 



224. Notes on a small collection of shells from Alaska. Op. cit., 34:67-68. 



225. The Museum of Natural History. In 'Sixteen Years at the University of Illinois,' 



a statistical study of the administration of President Edmund J. James. Uni- 

 versity of Illinois, Urbana, pages 119-121. 



226. A mussel survey of the ujijier waters of the \'ermilion River with special refer- 



ence to the Salt Fork. (With Frank Smith). Trans. Illinois State Acad. Sci., 

 12:129-131. 



227. Effect of sewage and other pollution on animal life of rivers and streams. Op. cit., 



13:271-279. 



1921 



228. The value of ecology in the interpretation of fossil faunas. School Sci. and Math., 



21:323-327. 



229. Baker's 'Life of the Pleistocene' (reply to criticism by Dr. Shufeldt). The Auk, 



38:155-156. 



230. Preparing collections of the Mollusca for exhibition and study. Trans. Amer. 



Micros. Soc, 40(l):31-46. 



231. New forms of Pleistocene mollusks from Illinois. Nautilus, 35:22-24. 



232. The importance of ecologv in the interpretation of fossil faunas. Ecology, 2: 



277-280. 



