PROGRESS IN BIOLOGICAL INQUIRIES, 1939 91 
fishery ; cooperation with the conservation departments of North Caro- 
lina, South Carolina, Virginia, and Maryland, on matters pertaining 
to the propagation and regulation of oysters, crabs, and terrapin, and 
certain commercial fishes; a joint program with Duke University for 
studies of ecology of marine organisms, and particularly the parasites 
of marine fish and crustacea was continued ; for the Union Carbon and 
Carbide Corporation, corrosion tests w ith stainless steel cable in sea 
water were made; for the Aluminum Company of America and the 
United States Navy, antifouling and corrosion tests were made of 
various paints used on aluminum ship plate; and improvement of the 
laws for encouragement of oyster farming and the protection of the 
natural oyster resources of this State were suggested to the Shell-fish 
Committee of the North Carolina State Legislature. The terrapin- 
propagation operations of the laboratory were made available to repre- 
sentatives of the Universal News Service and Fox Movietone, Inc., 
who prepared motion-picture films of this activity for public display. 
Supervision of the operation of the North Carolina Fisheries, Inc., 
was continued and arrangements carried out for handling fish during 
periods of overpr oduction, with the assistance of the Federal Surplus 
Commodities Corporaton, and for the creation of a better market 
for clams through local processing, for a large canning concern. 
Independent investigations —The 28 independent investigators from 
other institutions, who were provided with laboratory facilities at 
various times of the year, were engaged in the following studies: Dr. 
W. C. George, University of Nor th Carolina, lymphocytes of lamelli- 
branchs; Dr. A. S. Pearse, Duke University, assisted by Helen J. 
Ramsey, environmental factors and faunas of sand beaches, parasites of 
marine animals; Dr. F. H. McCutcheon, North Carolina State College, 
respiration and blood of turtles; Dr. Bert Cunningham, Duke Uni- 
versity, chemical studies of incubation of terr apin eggs; Dr. Walter E. 
Southwick, physiology of spermatozoa; Dr. Lawrence S. Ritchie, 
Womans College of the University of North Carolina, nuclear changes 
in protozoa ; L. J. Flemister and Dr. Sarah E. Culbreth, Duke Uni- 
versity, physiology of the swim bladder of fishes; Dr. William L. 
Engels and Dr. Richard A. Edwards, University of North Carolina, 
vertebrates of coastal islands; Dr. Wm. A. Kepner assisted by Way- 
land J. Hayes, Jr., University of Virginia, anatomy of Turbellaria ; 
Dr. M. A. Stirewalt and Dr. F. F. Ferguson, University of Virginia, 
study of Rhabdocoeles; Dr. Katharine R. Jeffers, Duke University, 
effect of pituitary hormones on ovaries of marine fishes; Coit M. 
Coker, University of North Carolina, embryology of echinoderms; 
Dr. and Mrs. Paul A. Meelitsch, Wright Junior College, Myxosporidia 
and Sarcodina of fish; Dr. Sewell H. Hopkins, Texas A. & M. College, 
life cycle of parasites (especially Trematoda) of marine fishes; Dr. 
and Mrs. George W. Wharton, Jr., Duke University, the ecology of 
sand beaches; Wm. E. DeTurk, Duke University, parasites of crusta- 
cea; Dr. Gordon H. Tucker, University of North Carolina, egg devel- 
opment of an ascidian; J. Harry Allen, University of North Carolina, 
distribution of marine invertebrates; Sidney Shapiro, American 
Museum of Natural History, differential growth in seombriform fish ; 
A. B. Hardcastle and Margaret Hardcastle, Duke Univer sity, life 
history and parasites of menhaden. 
Propagation of the diamond-back terrapin —The total production 
of young terrapin hatched and reared at Beaufort, N. C., amounted 
