Investigational Reports 



*rR 29. Condition of razor clam fishery in 



vicinity of Cordova, Alaska, by Seton H. 

 Thompson and F. W. Weymouth. 1935. 

 14 p., lllus. 



*IR 30. Effect of manufacture on the quality of 

 nonoily fish meals, by Roger W. Harrison, 

 Andrew W. Anderson and S. R. Pottinger. 

 1935. 30 p. 



*LR 31. Effect of method of manufacture on the 

 composition of haddock fish-meal 

 proteins, by S. R. Pottinger, Roger W. 

 Harrison and Andrew W. Anderson. 1935. 

 14 p. 



*IR 32. Studies on drying cod and haddock 



waste, by Andrew W. Anderson, Roger W. 

 Harrison and S. R. Pottinger. 1935. 41 p. 



*IR 33. Physical and chemical changes in the 



pink salmon during the spawning migration, 

 by Frederick A. Davidson and O. Eugene 

 Shostrom. 1936. 37 p. , lllus. 



*IR 34. The home canning of fishery products, 

 by Norman D. Jarvls and Francis P. 

 Griffiths. 1936. 16 p., lllus. 



*IR 35. Care and diseases of trout, by H, S. 

 Davis. Rev. 1937. 76 p.. illus. Revision 

 of Document no. 1061 and IR 22. 



*IR 36. Vitamin content of oils from cannery 

 trimmings of salmon from the Columbia 

 River and Puget Sound regions, by Roger 

 W. Harrison, Andrew W. Anderson, 

 Arthur D. Holmes and Madeleine G. Pigott. 

 1937. 8 p. 



*IR 37. Preliminary report on the cause of the 

 decline of the oyster industry of the York 

 River. Va. , and the effects of pulp-mill 

 pollution on oysters, by Paul S. Galtsoff, 

 Walter A, Chlpman, Jr. , Arthur D. 

 Hasler, and James B. Engle. 1938. 42 p. , 

 illus, 



*IR 38. Marketing of shad on the Atlantic 



coast, by Fred F. Johnson. 1938. 44 p. . 

 illus. 



*IR 39. Trade In fresh and frozen fishery 

 products and related marketing 

 considerations in the San Francisco Bay 

 area, by Barton DeLoach. 1938, 51 p. , 

 illus. 



*IR 40. Pacific salmon oils, by Roger W, 



Harrison, Andrew W, Anderson, S. R, 

 Pottinger and Charles F. Lee. 1939. 21 p. 



*IR 41, The mineral content of the edible 



portions of some American fishery pro- 

 ducts, by Hugo W, Nilson and E. J. 

 Coulson. 1939. 7 p. 



*IR 42. A plan for the development of the 



Hawaiian fisheries, by Frank T. Bell and 

 Elmer Higgins. 1931. 25 p., illus. 



*IR 43. Some effects of ultraviolet irradiation 

 of haddock fillets, by Joseph F. 

 Puncochar, William B. Lanham, Jr. , and 

 Hugo W. Nilson. 1939. 8 p. , illus. 



*IR 44. Study of the metabolism of naturally 

 occurring fluorine in canned salmon and 

 mackerel, by Charles F. Lee and Hugo W. 

 Nilson. 1939. 15 p., Olus. 



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