224 Marsh — Limnetic Crustacea of Green Lake. 



Imhof, O. E. '92. Die Zusammensetzung der pelagischen 

 Fauna der Susswasserbecken. Biol. Centralbl. Bd. 12. 



Marsh, C. Dwight. '93. On the cyclopidae andcalanidae of Cen- 

 tral Wisconsin. Trans. Wis. Acad., Vol. IX., pp. 189-224. 



'94. On the vertical distribution of pelagic Crustacea in 



Green Lake, Wis. Amer. Nat., Vol. XVIII., pp. 807-809. 



'95. On the cyclopidae and calanidae of Lake St. Clair. 



Lake Michigan, and certain of the inland lakes of Michigan 

 Bull, of the Michigan Fish Commission. No. 5. 



Reighard, J. E. '94. A biological examination of Lake St. 

 Clair. Bull, of the Mich. Fish Com. No. 4. 



Ward, H. B. '95a. A new method for the quantitative deter- 

 mination of plankton hauls . Proc. Amer. Micr. Soc. , Vol. 

 XVII., pp. 256-260. 



'96. A biological examination of Lake Michigan in the 



Traverse Bay region. Bull. Mich. Fish Com. No. 6. 



Whipple, Geo. C. '95. Some observations of the temperature 

 of surface waters: and the effect of temperatures on the 

 growth of micro-organisms. Jour. N. E. Water Works 

 Assoc. Vol. IX., pp. 202-222. 



Zacharias, Otto. '94. Beobachtungen am Plankton des G-r. 

 Ploner See's- Forschungsberichte aus der Biologischen Sta- 

 tion zu Plan. Theil 2, pp. 91-137. 



