PROGRESS IN BIOLOGICAL INQUIRIES, 1931 445 



Further studies on the influence of a power dam in modifying conditions 

 affecting the migration of the salmon. Proceedings of the National Academy of 

 Sciences, vol. 15, No. 1, January, ll)2J), pp. 50-62. 



Some respont^es of soclcoye salmon to enviroiunental influences during fresh- 

 water migration. Annals and Magazine of Natural History, 10th series, vol. 

 6, No. 31, 1930, pp. 18-36. 



The division also maintains contact with the research program 

 of the fisheries of the North Atlantic and progress in biological in- 

 vestigations relating to these fisheries conducted by the various Gov- 

 ernments concerned through the annual meetings of the North Amer- 

 ican Council on Fishery Investigations — an international scientific 

 advisory body composed of representatives of Canada, Newfound- 

 land, France, and the United States. The eighteenth meeting of this 

 organization was held on September 29 and 30, 1931, at Ottawa, at 

 which the United States was represented by the chairman, Dr. Henry 

 B. Bigelow; by Henry O'Malley, Commissioner of Fisheries; and 

 by Elmer Higgins, chief of the division of scientific inquiry. 



The division also maintains contact with the research program 

 of the International Passamaquoddy Fisheries Commission, engaged 

 in studies of the Passamaquoddy region, the coastal waters of Maine, 

 and the Bay of Fimdy, with special reference to the probable effect 

 upon the fisheries of projected hydroelectric development at the 

 mouth of Passamaquoddy Bay. O. E. Sette, in charge of the divi- 

 sion's North Atlantic fishery investigations, is one of the United 

 States commissioners, and a technical advisory committee to the com- 

 mission includes Dr. Henry B. Bigelow and Prof. A. E. Parr, both 

 of whom are engaged in cooperative researches with the division's 

 staff. Several meetings of this commission during the year have 

 been attended by these gentlemen and on occasion by the chief of the 

 division acting for the Commissioner of Fisheries. 



During the year 21 scientific or administrative reports were pub- 

 lished under the supervision of the division or as a result of investi- 

 gations of its staff. The list of papers follows : 



Chamberlain, Thomas K. 



Annual growth of fresh-water mussels. Bulletin, Vol. XLVI, 1930, pp. 

 713-739, a) figs. Document 1103. 

 COWLES, R. P. 



A biological study of the offshore waters of Chesapeake Bay. Bulletin, 

 Vol. XLVI, 193C, pp. 277-381, 16 figs, (graphs only). Document 1091. 

 Ellis, M. M. 



A survey of conditions affecting fisheries in the upper Mississippi River. 



Fishery Circular No. 5, 18 pp. 

 Some factors affecting the replactment of the commercial fresh-water 

 mussels. Fishery Circular No. 7, 10 pp. 

 Ellis, M. M., Amanda D. Merrick, and Marion D. Ellis. 



The blood of North American fresh-water mussels under normal and ad- 

 verse conditions. Bulletin, Vol. XLVI, 1930, pp. 509-542, 14 figs. Docu- 

 ment No. 1097. 

 Fedekighi, Henry. 



Studies on the oyster drill {Urosnipinx cinerea, Say). Bulletin, Vol. 

 XLVII. pp. 85-115, 7 figs. Bulletin No. 4. 

 Galtsoff, Paul S. 



Survey of oyster bottoms in Texas. Investigational Report No. 6, 30 pp., 

 14 figs., 1 map. 

 Galtsoff, Paul S., and Dorothy V. Whipple. 



Oxygen consumption of normal and green oysters. Bulletin, Vol. XLVI, 

 pp. 489-508. Document No. 1094. 



