CONTENTS. 
Reporr OF THE COMMISSIONER OF FISHERIES FOR THE FISCAL YEAR ENDED JUNE 30, 
1921. By Hugh M. Smith. 50 pp. (Document No. 900. Issued December 14, 
1921.) 
PaciFIc SALMON FISHERIES. Third edition. By John N. Cobb. Appendix I, 268 
pp-, 48 figs. (Document No. 902. Issued May 24, 1921.) 
IMPROVEMENTS IN PROCESS OF SALTING RIVER HERRING, ESPECIALLY ADAPTED TO 
WARM CLIMATES. By Harden F. Taylor. Appendix II, 7 pp. (Document No. 
903. Issued May 7, 1921.) 
FISHES OF THE YELLOWSTONE NATIONAL PARK. WITH DESCRIPTION OF THE PARK 
WATERS AND NOTES ON FISHING. By Hugh M. Smith and William ©. Kendall. 
Appendix ITT, 30 pp., 16 figs. (Document No. 904. Issued December 31, 1921.) 
Foop OF YOUNG WINTER FLOUNDERS. By Edwin Linton. Appendix IV, 14 pp. 
(Document No. 907. Issued July 23, 1921.) 
FISHERY INDUSTRIES OF THE Unirep States. REPORT OF THE DIVISION OF STATIS- 
TICS AND METHODS OF THE FISHERIES FOR 1920. By Lewis Radcliffe. Appendix 
V, 187 pp., 8 figs. (Document No. 908. Issued October 4, 1921.) 
ALASKA FISHERY AND FUR-SEAL INDUSTRIES IN 1920. By Ward T. Bower. Appen- 
dix VI, 154 pp., 3 figs. (Document No. 909. Issued December 12, 1921.) 
DANGER TO FISHERIES FROM OIL AND TAR POLLUTION OF WATERS. By J. S. Gutsell. 
Appendix VII, i0 pp. (Document No. 910. Issued October 3, 1921.) 
PROGRESS IN BIOLOGICAL INQUIRIES, 1921. REPORT OF THE DIVISION OF SCIENTIFIC 
INQUIRY FOR THE FISCAL YEAR 1921. By R. E. Coker. Appendix VIII, 38 pp., 
2 figs. (Document No. 911. Issued January 26, 1922.) z 
PROPAGATION AND DISTRIBUTION OF FOOD FISHES, 1921. REPORT OF THE DIVISION 
OF FISH CULTURE FOR THE FISCAL YEAR 1921. By Glen ©. Leach. Appendix 
IX, 94 pp., 5 figs. (Document No. 912. Issued September 28, 1922.) 
Ill 
