CONTENTS. 



Page. 



Early history and seaward migration of chinook salmon in the Columbia and Sac- 

 ramento Rivers. By Willis H. Rich. (Document 887, issued July 26, 1920) 1-74 



Natural history and propagation of fresh-water mussels. By R. E. Coker, A. F. 



Shira, H. W. Clark, and A. D. Howard. (Document 893, issued May 2, 1921) 75-182 



Peritoneal membranes, ovaries, and oviducts of salmonoid fishes and their signifi- 

 cance IN FISH-CULTURAL PRACTICES. By William Converse Kendall. (Document 901, 

 issued March 28, 192 1) 183-208 



Further limnological observations on the Finger Lakes op New York. By Edward 



A. Birge and Chancey Juday. (Document 905, issued October 8, 1921) 209-252 



Distribution and food of the fishes of Gree.n Lake, Wis., in summer. By A. S. 



Pearse. (Document 906, issued October 7, 1921) 253-272 



General index 273-277 



m 



