146 U-S. BUREA.U OF FISHERIES 



assistants; investigation of survival of mackerel larvae on the offshore 

 spawning grounds by O. E. Sette, with the Albatross //basing at the 

 station; study of the physiology of year-mark formation on fish scales 

 by R. A. Nesbit; experimental rearing of fish larvae by Louella E. 

 Cable; study of the effects of temperature on the incubation of mack- 

 erel eggs by Leonard G. Worley; and study of the abundance and 

 growth of young scup, sea bass, and squeteague in the Woods Hole 

 region by Prof. A. E. Parr of the Bingham Oceanograpliic Founda- 

 tion. The new station tender, Phalarope II, proved admirably fitted 

 to the young-fish trawling and other services at the station. 



BEAUFORT, N.C. 



Research. — Operation of the Beaufort laboratory was continued 

 throughout the year under the direction of Dr. H. F. Prytherch and 

 furnished facilities for the study of fishery problems of the South 

 Atlantic region. The chief investigations conducted here at present 

 by the Bureau's staff, as reported elsewhere, deal with the application 

 of science to oyster farming in southern waters, the development of 

 new methods of opening oysters, the reproduction and distribution of 

 shrimp, and the propagation of the diamondback terrapin. Labora- 

 tory facilities for marine research have been furnished to 16 indepen- 

 dent research workers from other institutions who have engaged in 

 the following studies: Dr. H. V. Wilson, University of North Carolina, 

 development of sponges; Dr. Ezda Deviney, Florida State College for 

 Women, regeneration in Ascidians; Dr. O. W. Hyman, University of 

 Tennessee, larval development of the stone crab; Dr. Elinor H. Behre, 

 Louisiana State University, effect of environmental changes on chro- 

 matophores of some invertebrates; Dr. W. C. George, University of 

 North CaroHna, chordate blood; J. Paul Reynolds, Johns Hopkins 

 University, marine fauna; Mabel L. Bacon, University of North 

 Carolina, air bladder and ear of certain fishes; Dr. Hoyt S. Hopkins, 

 New York University, growth rate, distribution of catalase in bivalve 

 mollusks; Dr. Irving E. Gray, Duke University, swim bladder of 

 fishes; Henry Vander Schalie, University of Michigan, faunal relations 

 of Naiades to brackish water; Dr. Bert Cunningham, Duke Univers- 

 ity, embryonic development of terrapin; Dr. Leon C. Chesley, Duke 

 University, digestion in marine fishes; Joseph M. Odiorne, Harvard 

 University, color changes in Fundulus; F. R. Brown, University of 

 North Carolina, distribution of echinoderms; Dr. Everett I. Evans, 

 United States Department of Agriculture, physiology of sex in mam- 

 mals; J. P. Givler, North Carolina College for Women, embryology 

 of the alligator. 



The facilities of the station were also utilized by the United States 

 Chemical Warfare Service for tests of wood preservatives and by the 

 Bureau's Division of Fishery Industries for experiments with treated 

 rope under various tidal conditions. Cooperative tests were made 

 with the Woolsey Paint Co. in respect to antifouling and protective 

 value of copper paints nnd with the Colvulc Rubber Co. for similar 

 experiments with rubber paint products. 



Terrapin culture. — A new record in the propagation of the diamond- 

 back terrapin was established in the rearing of the 1931-32 brood 

 which exceeded by over 95 percent the number grown and distributed 

 by this station during previous years. During the period from May 7 



