The Prodiiciiviiy of Fish Food in Oneida Lake 25 



Dr. Nathan A. Harvey, Stale Normal College, Ypsilanti, Mich. 



Poritera. 



Dr. O. A. Johannsen, Cornell University, Ithaca, N. Y. 



Diptera. 



Mr. Chancey Judaj", University of Wisconsin, Madison, Wis. 



Cladocera. 



Dr. C. Dwight Marsh, Bureau of Plant Industry, Washington, D. C. 



Copepoda. 



Dr. Ruth Marshall, Lane Technical School, Chicago, 111. 



Acarina. 



Dr. J. Percy Moore, University of Pennsylvania, Philadelphia, Pa. 



Hirudinea. 



Dr. James G. Ncedham, Cornell University, Ithaca, N. Y. 



Odonata and Ephemerida. 



Dr. A. E. Ortmann, Carnegie Museum, Pittsburgh, Pa. 



Cambarus. 



Dr. H. S. Pepoon, Lake View High School, Chicago, 111. 



Plants. 



Dr. H. A. Pilsbry, Academy of Natural Sciences, Philadelphia, Pa. 



Amnicolidae, etc. 



Dr. R. \\\ Sharpe, Dc\\4tt Clinton High School, Brooklyn, N. Y. 



Ostracoda. 



Prof. Frank Smith, University of Illinois, Urbana, 111. 



Porifera. 



Dr. Victor Sterki, Carnegie Museum, Pittsburgh, Pa. 



Sphaeriidae. 



Miss Caroline E. Stringer, High School, Omaha, Neb. 



Planaria. 



Dr. E. N. Transeau, Ohio State University, Columbus, Ohio. 



Algae. 

 United States National Museum, Washington, D. C. 



Isopoda. 



Dr. Bryant Walker, Detroit, Mich. Ancylidae, Amnicolidae, etc. 



Miss Ada L. Weckel, Oak Park High School, Oak Park, 111. 



Amphipoda. 



Dr. Paul S. Welch, Kansas State Agricultural College, Manhattan, 

 Kans. Oligochaeta, Lepidoptera. 



The need for investigations of the kind described in this 

 bulletin is clearly indicated and recommended in a recent 

 report of the Commissioner of Fisheries (Smith, '16, p. 42). 



