210 U. S. BUREAU OF FISHERIES 
development of quick-freezing methods as adaptable to the preserva- 
tion of fishery products. These methods now have widespread 
application in the preservation of a large number of other foods such 
as fruits, vegetables, poultry, and meat. In another instance the 
Bureau led in the search for new sources of vitamins A and D, and 
found that oils from many species of fish are rich in these vitamins. 
A direct outgrowth of these investigations is the manufacture of high- 
vitamin oils from the livers and viscera of varicus species of fish such 
as halibut, tuna, and swordfish. Formerly, only cod livers were used 
for this purpose. This has resulted not only in raising the income of 
the fishery industry through the sale of products heretofore wasted, 
but it has also been a boon to the drug industry. Of most importance, 
however, is the contribution of this work to the health of our people 
by providing an economical and convenient source of vitamins A 
and D. 
LABORATORIES 
The Division carried on its technological studies during 1939 under 
the direction of Dr. J. R. Manning, Senior Technologist, until his 
death in August, and since that time under the direction of J. M. 
Lemon, Technologist. These studies were conducted at the Bureau’s 
laboratories located in Washington, D. C., College Park, Md., and 
Seattle, Wash. In addition, members of our technological staff 
cooperated in the conduct of investigations in the laboratories of the 
University of Maryland and Maryland State Agricultural Experiment 
Station at College Park, Md.; the University of Washington, Seattle, 
Wash.; and Washington State College, Pullman, Wash. 
The following personnel, in the various laboratories listed below, 
contributed to the technological investigations described in the 
ensuing pages of this report: 
College Park, Md.—J. M. Lemon, Technologist in Charge; W. T. 
Conn (deceased) and S. R. Pottinger, Assistant Technologists; Dr. 
H. W. Nilson, Assistant Pharmacologist; C. F. Lee, W. B. Lanham, 
Jr., A. L. Fowler (resigned), and W. H. Baldwin, Junior Chemists; 
J. F. Puncochar and Dr. R. J. Reedy, Junior Bacteriologists; H. E. 
Crowther, C. E. Swift, and R. H. Flowers, Research Associates; 
L. F. Ortenzio, H. F. Kraybill, N. G. Sprague, L. J. Barton, R. C. 
Dawson, Research Fellows; and Roscoe Dwiggins, J. D. Rollow, Ned 
Oakley, D. J. Bowman, and C. M. Forsythe, Student Assistants. 
Seatile, Wash.—R. W. Harrison, Technologist in Charge; M. E. 
Stansby, Assistant Technologist; and L. O. Simenson, William 
Clegg, Robert Carlton, Marie Sater, William Winberg, and Leslie 
Lowen, Chemical or Research Assistants. 
Washington, D. C—N. D. Jarvis, Associate Technologist. 
COLLEGE PARK, MD. 
Additional facilities for scientific study of problems concerning the 
fishing industry on the Atlantic coast will be provided the Bureau 
through an allotment of $100,000 from the Public Works Adminis- 
tration for the construction of a technological laboratory building on 
the campus of the University of Maryland at College Park. 
The plans contemplate erection of a building which will permit 
consolidation of the Bureau’s technological laboratories which are 
