380 "L'-S. BUREAU OF FISHERIES 



equipped for experimental biological research, complete plumbing 

 was installed in most of the rooms when the building was constructed 

 so that it can be adapted readily for experimentation in the future 

 should fishery investigations in that region develop so as to re- 

 quire such equipment. Hence no facilities are available for guest 

 investigators. 



WOODS HOLE LABORATORY 



During the summer of 1933 experiments on the physiology of the 

 fiyster were continued by Dr. P. S. Galtsoff and R. O. Smith and 

 experiments on methods of marking mackerel were carried on by 

 O. E. Sette at the Woods Hole Biological Station. Continued lack 

 of necessary operating funds prevented other work at this station. 



This is the second summer that this well-equipped marine labora- 

 tory, capable of providing facilities for some 20 investigators, has 

 been largely unused. In the meantime, problems of importance to 

 the development of fisheries biology, whose solution would greatly 

 facilitate progress in the major investigations on the condition of 

 our fisheries, are rapidly accumulating. Among these are: (1) The 

 effect of temperature and food on the rate of growth of certain food 

 fishes; (2) the effect of group behavior on activity and rate of 

 growth; (3) the physiological effects on the fish of injuries received 

 in tagging operations; (4) the effect of temperature on calcium me- 

 tabolism and consequent alteration of scale structure; (5) the factors 

 responsible for high mortality in the larval stages of fishes; (6) 

 the effects of temperature on the respiratory mechanism of mackerel. 

 These and many other problems might readily be attacked at very 

 little expense to the Government by volunteer investigators from 

 universities if they could be provided the facilities. Hence resump- 

 tion of normal activities at the Woods Hole laboratory is urgent. 



BEAUFORT LABORATORY 



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 and Gulf region. The chief investigations conducted here 

 at present by the Bureau's staff are reported elsewhere. Laboratory 

 facilities for marine research have been furnished to 13 independent 

 research workers from other institutions who have engaged for short 

 periods of time in the following studies: Dr. H. V. Wilson, Uni- 

 versity of North Carolina, behavior of living cells of Polyzoa; 

 Irene Bolick, University of North Carolina, lymph cells of Echino- 

 derms; W. H. Hadley, Jr., Cornell University, the foraminifera of 

 the North Carolina coast; H. C. Burdick, State University of Iowa, 

 metabolism of fish; Dr. Bert Cunningham, Duke University, rela- 

 tion of temperature to rate of development of terrapin embryos ; Dr. 

 P. B. Powers, University of Pennsylvania, ciliate Protozoa of Echi- 

 noderms; F. K. Brown, Vanderbilt Medical School, spermatozoa of 

 Prosobranch snails; L. Lyndon Williams, Rensselaer Polytechnic 

 Institute, distribution of marine invertebrates in the vicinity of Beau- 

 fort; Dr. Hoyt S. Hopkins, New York University, respiration and 

 tissue-glycolysis in bivalve mollusks; Earl Mathis, Northwestern 



