PROGRESS IN BIOLOGICAL INQUIRIES, 193 3 317 



the ro<!:ulation of fishing in a Lon*]: Island bay would have little 

 effect upon the total fish supply, and whether or not net fishing is 

 regulated or prohibited is entirely a matter of local policy of an 

 economic rather than a biological nature. It remains for the State 

 cooperating biologists to determine by appropriate studies the de- 

 gree of interchange between hx^al and more generally distributed 

 populations of fish, and the effects of fishing different types of gear 

 upon the local supply. 



For many years most gratifying cooi)eration has been received 

 by the Bureau's biologists from the States. California is now en- 

 gaged in a cooperative investigation of the trout supplies in Cali- 

 fornia, looking toward a more adequate restocking of the streams 

 and a more rational regulation of fishing. New York State is coop- 

 erating in the conduct of a study of the nutritional requirements 

 of trout to improve hatcher}^ practices in feeding and rearing. 

 Oregon has arranged to cooperate wuth a Bureau investigator in a 

 study of fish diseases in hatcheries. Mississippi has during the 

 past year assisted materiallv in a survey of their fishing waters. 

 Michigan and Wisconsin have cooperated in the study of the great 

 commercial fisheries in Lakes Michigan and Huron, and an extensive 

 cooperative jDroject has recently been completed in Lake Erie in 

 which Ohio and New York were the chief collaborators with the 

 Bureau. North Carolina, Connecticut, Washington, and Louisiana 

 are assisting in investigations looking to the restoration of the oyster 

 beds of their coastal w^aters, and similar cooperation has been afforded 

 by Florida and Texas in the past. Georgia, Louisiana, and Texas 

 have joined hands with the Bureau in an extensiA^e study of the 

 great shrimp fishery of the South Atlantic and Gulf coasts. Such 

 cooperation should be materially extended for most fish are migra- 

 tory ; few are limited to strictly State waters ] many are international. 



While cooperation has been most extensive in a study of the marine 

 fishes, a fertile field for further cooperation remains in the inland 

 waters. Especially are the pollution problems interstate in char- 

 acter for the effects of industrial wastes from mining and manu- 

 facturing frequently extend down stream through several State 

 jurisdictions. This is a field in which the Bureau has heretofore 

 taken but a minor part, but owing to recent legislation the Bureau 

 is authorized to undertake such studies, and a material extension of 

 this type of w'ork, which can be made most effective with whole- 

 hearted State cooperation, is anticipated. 



PUBLICATIONS 



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

 cations resulting from investigations of the staff or conducted under 

 the supervision of the Division has been reduced. The list of papers 

 published by the Bureau during 1933 follows : 



HiGGiNs, Elmer. 



Progress in biological inquiries, 1932. Appendix 2, Report, Commissioner 

 of Fisheries, 1933, pp. 79-147. 

 Setie. O. E. 



Outlook for mackerel fishery in 1933. Fislifry Circular No. 14, 23 pp., 



