82 U.S. BUREAU OF FISHERIES 



without seriously reducing the permanent staff. Under the enlarged 

 program of 1931, a great mass of field observations have been col- 

 lected which during the past year have been subjected to analysis 

 and laboratory study so that reduced expenditure for travel, equip- 

 ment, and the usual expenses of investigations has not seriously affected 

 the efficiency of the research activities nor materially curtailed the 

 scientific output. 



As in former years the Division of Scientific Inquiry participated 

 in the work of the North American Council on Fishery Investiga- 

 tions — an international scientific advisory body composed of repre- 

 sentatives from Canada, Newfoundland, France, and the United 

 States, all of which are directly interested in the fisheries of the 

 North Atlantic area. The nineteenth meeting of the council was 

 held in Washington D.C., on October 20 and 21, which a number of 

 the Division's investigators attended in addition to the regular mem- 

 bership of the council. 



In previous reports mention has been made of extensive coopera- 

 tion in fishery research by States and other institutions. Such 

 cooperation has been continued in a gratifying degree during the 

 past year. Not only has official support and encouragement in proj- 

 ects been accorded by the States, but also active participation either 

 by the furnishing of considerable funds or by coordinated activity on 

 the part of the research staffs of the individual State fish and game 

 commissions has been provided to such an extent that activities of 

 the Bureau's staff have been more effective than would have been 

 the case otherwise. Such cooperation which is gratefully acknowl- 

 edged by the Bureau is in most cases mentioned in connection with 

 the various investigations in the following pages. 



PUBLICATIONS 



Owing to the curtailed funds for printing the number of publica- 

 tions resulting from investigations of the staff or conducted under 

 supervision of the Division has been reduced. Nevertheless, 12 

 reports were issued by the Bureau and 34 were printed under private 

 auspices in pubUcations outside of the Bureau of Fisheries. The list 

 of papers published by the Bureau follows: 



Fish, Marie Poland. 



Contributions to the Early Life Histories of Sixty-two Species of Fishes 

 from Lake Erie and its Tributary Waters. Bulletin, vol. XLVII, pp. 

 293-398, 144 figs. Bulletin No. 10. 

 Galtsoff, Paul S. 



Introduction of Japanese Oysters into the United States. Fishery Circular 

 No. 12, 16 pp., 4 figs. 

 HiGGiNS, Elmer. 



Progress in Biological Inquiries, 1931. Appendix III, Report, Commis- 

 sioner of Fisheries, 1932, pp. 441-529. 

 Hopkins, A. E. 



Sensory stimulation of the Oyster, Ostrea virginica, by Chemicals. Bulletin, 

 vol. "XLVII, pp. 249-261, 11 figs. Bulletin No. 8. 

 JtTDAY, C, Willis H. Rich, G. I. Kemmerer, and Albert Mann. 



Limnological Studies of Karluk Lake, Alaska, 1926-1930. Bulletin, vol. 

 XLVII, pp. 407-436, 6 figs. BuUetin No. 12. 

 KoEHRiNG, v., and H. F. Prytherch. 



New Methods of Opening Oysters and Improving their Condition for Mar- 

 ket. Investigational Report No. 15, 25 pp., 11 figs. 

 Pearson, John C. 



Winter Trawl Fishery Off the Virginia and North Carolina Coasts. Investi- 

 gational Report No. 10, 31 pp., 12 figs. 



