4 U. S. BUREAU OF FISHERIES 
cooperation of the same sort has continued during the past year, 
reflecting in a measure the growing appreciation of the need for 
more exact knowledge regarding the resource we seek to conserve. 
Cooperation with various agencies of the Federal Government has 
been effective; the most outstanding services have been rendered by 
the United States Forest Service. As a result of a cooperative agree- 
ment between the two organizations, the Bureau of Fisheries has 
assumed responsibility for conducting investigations in forest waters, 
looking to the perfection of a rational system of stocking and manage- 
ment of supphes of game fishes, improvement of streams to increase 
productivity, and the regulation of angling. Vested with extensive 
administrative authority, the Forest Service has actively engaged 
in stréam-improvement construction, preliminary stream surveys, 
the stocking of forest waters along plans devised by the Bureau of 
Fisheries, and the regulation of the catch of anglers. Detailed plans 
for experimental management in various national forests have been 
developed which materially extend the facilities of this Bureau in 
acquiring necessary knowledge in this field. 
Numerous States have likewise cooperated with the Bureau of 
Fisheries in investigative work. These include Georgia, Louisiana, 
and Texas, in connection with the shrimp investigations; Michigan, 
Ohio, and New York in the collection of detailed statistics for the 
biological analysis of varying yields of Great Lakes fishes; Connecti- 
cut, Virginia, Alabama, and Washington in oyster investigations; and 
Vermont and California in aquicultural studies. Misisssippi has 
assisted in an ichthyological survey of its State waters. 
Various private agencies have also rendered valuable aid to this 
Division. Notable among them is the Woods Hole Oceanographic 
Institution, which has furnished its research vessel A¢lantis for col- 
lections in the offshore New England waters in connection with the 
study of the haddock and mackerel. Labor atory, office, and library 
facilities for various sections have been provided by many universities 
as noted above. 
In a somewhat different category from the above type of coopera- 
tion, which has included in some cases the furnishing of personnel, 
boats, laboratory quarters, or services directly concerned with fishery 
investigations, is the work of the U. S. Corps of Engineers, War 
Department, which forwarded the study of problems of fish pro- 
tection at Bonneville Dam on the Columbia River. These studies 
were originally undertaken by the Bureau of Fisheri 1es under a grant 
of funds from the War Department, as reviewed in previous annual 
reports. Because of budgetary limitation, however, it became neces- 
sary for the War Department to undertake on its own part the design- 
ing of fish protective works and the supervision of their construction. 
Harlan B. Holmes, Associate Aquatic Biologist of the Bureau of 
Fisheries, was detailed to the War Department under an extended 
leave of absence and has been placed in charge of this work. He has 
conducted the necessary detailed investigations with additional as- 
sistants furnished by the Corps of Engineers and reports direct to the 
District Engineer. The Bureau of Fisheries has maintained close 
contact with the entire problem, however, reviewing all plans for fish 
protection and assisting in various other ways with helpful advice 
and suggestions. 
