MIGRATION OF ADULT SOCKEYE SALMON IN PUGET 
SOUND AND FRASER RIVER. 
By Henry O’Mauey, Field Assistant, U. S. Bureau of Fisheries, in Charge of 
Operations on the Pacific Coast, 
and 
Wuus H. Ricu, Field Assistant, U. S. Bureau of Fisheries. 
INTRODUCTION. 
During the American-Canadian Fisheries Conference on the Pacific 
coast, in April and May, 1918, the question was constantly raised 
as to the time required for the sockeye salmon of Fraser River to pass 
through Puget Sound. 
In order to determine this important question, Dr. Hugh M. Smith, 
United States Commissioner of Fisheries, and W. A. Found, superin- 
tendent of the Canadian fisheries, decided to carry out an extensive 
marking experiment. Early in July the authors were detailed to 
take immediate charge for the U. S. Bureau of Fisheries, and to 
confer with Lieut. Col. F. H. Cunningham, acting for the Canadian 
Government. The final arrangements were that the Canadian 
fisheries authorities would handle the marking operations in Canadian 
waters, the U. S. Bureau of Fisheries the marking operations in 
Puget Sound, and that each Government would attend to the col- 
lecting of data in its respective waters. 
The authors are especially indebted to H. J. Todd & Sons; E. B. 
Deming, Pacific American Fisheries; W. A. Lowman, Coast Fish Co.; 
Frank Wright, Carlisle Packing Co.; and J. W. Elliott, Alaska Packers 
Association. Without the cooperation of these men and the members 
of their respective organizations it would have been impossible to have 
successfully conducted this experiment. L. H. Darwin, Washington 
State fish commissioner, and his deputies also rendered valuable 
assistance. Many helpful suggestions were received from Dr. Charles 
H. Gilbert, of Stanford University. 
PROCEDURE. 
TAGS AND THEIR ATTACHMENT. 
The method adopted for procuring the desired data was to mark, 
with serially numbered tags, enough adult sockeye salmon so that a 
sufficient number of returns could reasonably be expected. After 
consideration of several types of tags the one finally accepted was of 
the “‘bachelor-button”’ type, similar to those in use for marking cattle 
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