Series 



*SSR-F 48. Japanese tuna surveys in tropical 

 waters, translated from the Japanese 

 language by W. G. Van Campen. Jan. 

 1951. 40 p. , illus. 



♦SSR-F 49. The Japanese skipjack fishery, 



translated from the Japanese language by 

 W. G. Van Campen. Jan. 1951. 67 p. , 

 illus. 



*SSR-F 50. Kishinouye's order Plecostei, 

 translated from the Japanese language 

 by W. G. Van Campen. Jan. 1951. 16 p. 



*SSR-F 51. Japanese skipjack studies, trans- 

 lated from the Japanese language by W. G. 

 Van Campen. Jan. 1951. 30 p. , illus. 



*SSR-F 52. On the Japanese black tuna 



(Thunnus orientalis) , translated from the 

 Japanese language by W. G. Van Campen. 

 Jan. 1951. 22 p. , illus. 



SSR-F 53. Seasonal variations in toxicity of 



butter clams from selected Alaska beaches, 

 by John S. Chambers and Harris W. 

 Magnusson. Aug. 1950. 10 p. , illus. 



*SSR-F 54. Mid-Pacific oceanography, 



January-March 1950, by Townsend Crom- 

 well. July 1951. 9 p. , [67) 1. , illus. 



*SSR-F 55. Natural history of the sea lamprey 

 ( Petromyzon marinus) in Michigan, by 



1950. 



Vernon C. 

 illus. 



Applegate. Dec. 



237 p. 



*SSR-F 56. Sacramento - San Joaquin Delta 

 fishery resources; effects of Tracy 

 Pumping Plant and Delta Cross Channel, 

 by Leo F. Erkkila, James W. Moffett, 

 Oliver B. Cope, Bernard R. Smith, and 

 Reed S. Nielson. Dec. 1950. 109 p. . 

 illus. 



*SSR-F 57. Survey of the Columbia River and 

 its tributaries - Part 8, by Zell E. Park- 

 hurst. Dec. 1950. 19 p. , illus. 



SSR-F 58. Fishery survey of southern coastal 

 waters, by Raymond J. BuUer. Feb. 1951. 

 21 p. , illus. 



*SSR-F 59. Tests of hatchery foods for blue- 

 back salmon ( Oncorhynchu s nerka) 1944- 

 1948, by Roger E. Burrows, Leslie A. 

 Robinson and David D. Palmer. Mar. 1951. 

 39 p. , illus. 



*SSR-F 60. Tests of hatchery foods for blue- 

 back salmon, 1949, by Leslie A. Robin- 

 son, David D. Palmer and Roger E. Bur- 

 rows. Apr. 1951. 21 p. 



*SSR-F 61. Sea lamprey spawning runs in the 

 Great Lakes in 1950, by Vernon C. 

 Applegate and Bernard R. Smith. Apr. 

 1950. 49 p. , illus. 



*SSR-F 62. A study of the causes of death of 

 bait fishes, by Yasuo Suehiro. Trsins- 

 lated from the Japanese language by 

 W. G. Van Campen. Mar. 1951. 57 p. , 

 illus. 



*SSR-F 63. Tests of hatchery foods for blue- 

 back salmon, 1950, by Leslie A. Robin- 

 son, Merl H. Payne, Jr. , David D. Pal- 

 mer and Roger E. Burrows. May 1951. 

 23 p. 



SSR-F 64. Effect of tagging on the subsequent 

 behavior and condition of red salmon, by 

 G. J. Eicher, Jr. May 1951. 4 p. 



SSR-F 65. A fishway that shad ascend, by 

 Gerald B. Collins. July 1951. 17 p. , 

 illus. 



SSR-F 66. A survey of former shad streams 

 in Maine, by Clyde C. Taylor. Aug. 1951. 

 29 p. , illus. 



*SSR-F 67. Salmon research at Deer Creek, 

 Calif. , by Frederick K. Cramer and 

 David F. Hammack. Jan. 1952. 16 p., 

 illus. 



*SSR-F 68. Sea lamprey spawning runs in the 

 Great Lakes, 1951, by Vernon C. Apple- 

 gate, Bernard R. Smith, Alberton L. 

 McLain and Matt Patterson. Mar. 1952. 

 37 p. , illus. 



*SSR-F 69. Water temperatures of the Wil- 

 lamette River Basin, 1950, by KingsleyG. 

 Weber and Lyle G. Schedin. Feb. 1952. 

 25 p. , illus. 



*SSR-F 70. Sea lamprey spawning; Michigan 

 streams of Lake Superior, by Howard A. 

 Loeb and Albert E. Hall, Jr. Feb. 1952. 

 68 p. , illus. 



*SSR-F 71. Establishing tuna and other pelagic 

 fishes in ponds and tanks, by Albert L. 

 Tester. Feb. 1952. 20 p. , illus. This re- 

 port is also Contribution no. 18, Hawaii 

 Marine Laboratory, University of Hawaii. 



108 



