PROGRESS IN BIOLOGICAL INQUIRIES, 192 9 1085 



Independent investigators who studied at the Beaufort Biological 

 Laboratory included the following: Dr. Bartgis McGlone, University 

 of Pennsylvania, studies on body temperatures; Dr. W. C. George, 

 University of North Carolina, blood of Balanoglossus; Dr. J. I. 

 Hamaker, Randolph Macon College, distribution of calcareous 

 sands; A. S. Rose, University of North Carolina, experiments in 

 self-regulation of ascidians; Miss Ezda Deviney, Florida State Col- 

 lege for Women, regeneration in ascidians; M. C. Yoder, Lenoir 

 Rhyne College, echinoderms; E. E. Brown, public schools, Greens- 

 boro, N. C, midsummer birds; and Dr. Hoyt S. Hopkins, New York 

 University Dental College, muscles in bivalves. 



GULF COAST STUDIES 



The study of the collections of fishes made at various times by 

 difl'erent investigators on the coast of Texas was continued by 

 Isaac Ginsburg and extended to include other places on the Gulf 

 coast. Special attention was given to the commercially important 

 family of Scisenidse, with particular attention to racial studies of 

 the common species of that family. A comparison was made of the 

 Gulf and Atlantic populations of these species. 



For some time there has been felt a need for a manual of the 

 marine fishes of the Gulf coast, that will give descriptions of the 

 species to facilitate their identification and such pertinent facts in 

 their life history, habits, and economics as are known at present. A 

 beginning was made to produce such a manual, and it is hoped to 

 devote such time to it as may be spared from other duties until it is 

 completed. 



GREAT LAKES FISHERY INVESTIGATIONS 



In 1929 work on the Great Lakes, under the direction of Dr. John 

 Van Oosten, was confined largely to Lake Erie as was true in 1927 

 and 1928, although the work on experimental herring pound nets 

 begun in the fall of 1928 on Saginaw Bay in Lake Huron and re- 

 ferred to in the 1928 report was continued in the spring and fall 

 of 1929, and some data on the biology of the pike perches of Lake 

 Ontario and of the whitefish and lake trout of Lake Michigan were 

 collected. 



COMMERCIAL FISHERIES 



Virtually all the data from Lake Erie, except those on age and 

 growth, collected in 1927 and 1928 have been compiled though not 

 analyzed in detail. Length frequencies of all the species taken 

 in both the experimental nets (see reports for 1927 and 1928) and 

 the commercial nets have been made, and tables on the relative 

 destructiveness of various-sized meshes in trap nets and gill nets have 

 been compiled. Some of these tables served as a basis for the new 

 regulations passed in Ohio. Much time was also devoted to a re- 

 vision of the commercial fishing laws in Michigan and Indiana, and 

 recommendations were drawn up for Wisconsin, Minnesota, and 

 New York. All the States except Minnesota have now introduced 

 the recommended method of collecting statistics of the daily catch 

 together with the amount of gear employed. 



