288 PROCEEDINGS OF THE ACADEMY OF [1896. 



Fish Commission. Bull. U. S. Fish Com., Vol. 14, 1894, p. 143- 

 151. 



Thompson, Wyville. The Depths of the Sea. An account of 

 the general results of the dredging cruises of H. M. S. S. Porcupine 

 and Lightning, 1873. 



The Atlantic. A preliminary account of the general 



results of exploring voyage of H. M. S. Challenger, 1877. 



Tlrbyne, Alex. The Feeding Ground of the Herring. Nature, 

 Vol. 52, No. 1356, p. 617, and No. 1363, p. 129. 



Valenciennes, A. Sur les causes de la coloration en vert de 

 certaines huitres. Compt. Rend., XII, 345, 1841. 



Vanhoffen, E. Ueber gronlandisches Plankton (Vortrag.). 

 In Verhdign. Ges. deutsch Naturf. u. Ai'zte, 66 Vers. Wien, 2 Th., 

 I Hiilfte, p. 133-135. 



VoGT, Carl. Ocean and Mittlemeer, p. 303, 1848. 



AValter, E. Eine praktische verwerthbare Methode zur quanti- 

 tiven Bestimmung des Teichplankton. In Forschgsber. Biol. Stat. 

 Plon., Th. 3, p. 100-187. 



Ward, H. B. A Preliminary Report on the Worms (mostly 

 parasitic) collected in Lake St. Clair, in the summer of 1893. 

 Bull, of the Michigan Fish Commission, No. 4, 1894. Appendix 

 III, pp. 49-56. 



Anew Method for the Q,uantitative Determination of 



Plankton Hauls. Trans. Amer. ]\Iicr. Soc, Vol. 17, p. 255, 1896. 

 Zool. Centrlb., 3 Jhg., NR. 7, p. 225. 



The Food Supply of the Fish in the Great Lakes. The 



Nebraska Literary Magazine, Vol. 1, Nov., 1895, No. 2, pp. 107- 

 124. 



The Food Supply of the Great Lakes ; and some Ex- 

 periments on its Amount and Distribution. 2 Plates. Trans. 

 Amer. Micr. Soc, Vol. 17, p. 242-251, 1896. 



WiNTHER, G. On the Geographical Distribution of the Common 

 Oyster. Annals and Magazine of Natural History, London, March, 

 1878, 5 ser., Vol. 1, pp. 185-189. 



Al)stract translation of Om vore Haves Naturforhold 



med Hensyn til konstig Oestersavl og om de i den henseende an- 

 stillede Forscig. Kopenhagen, 1876. Nordisk Tidskrift for Fiskeri. 



AVoLCOTT, Dr. R. H. The Insecta and Acarina of Lake St. 

 Clair, a preliminary Report. Bull, of the Michigan Fish Com., No. 

 4, 1894. Appendix IV, pp. 55-56. 



Zacharias, O. Statistische Mittheilungen iiber das Plankton 

 des Grossen Ploner Sees. In Zool. Anz., 17 Jhg., No. 464, p. 457. 



Quantitative Untersuchungen iiber das Limnoplank- 



ton. Nebst Anleitung zur Voriiahme von Ziihlungen und Volu- 

 raenmessungen. Berlin, 1896, 64 p., M. 2. 



Faunistische Mittheilungen (Ploner See) 2 Taf. In 



Forschungsber. Biol. Stat. Plon, Th. 3, p. 73. 



