Special Scientific Reports 



*SSR 51. A survey of the Columbia River and 

 its tributaries with special reference to 

 the management of its fishery resources, 

 by Willis H. Rich. May 1948. 25 p. 



*SSR 52. Outlook for the Alaska herring fishery 

 in 1948, by L. N. Kolloen and C. H. 

 Elling. May 1948. 23 p. , illus. 



*SSR 53. History, development, and problems 

 of electric fish screen, by Harlan B. 

 Holmes. June 1948. 62 p. 



*SSR 54. A record of pilchard eggs and larvae 

 collected during surveys made in 1939 to 

 1941, by Elbert H. Ahlstrom. June 1948. 

 76 p. , illus. 



*SSR 55. A report upon the Grand Coulee fish- 

 maintenance project 1939-1947, by Fred- 

 eric F. Fish and Mitchell G. Hanavan. 

 Nov. 1948. 63 p. , illus. 



*SSR 56. Observations on the horizontal dis- 

 tribution and the numbers of eggs and 

 larvae of the northern anchovy (Engraulis 

 mordax) off California in 1940 and 1941, 

 by John C. Marr and Elbert H. Ahlstrom. 

 Oct. 1948. 13 p. 



SSR 57. § 



*SSR 58. A report on the appearance of the 

 fungus Ichthyosporidium hoferi in the 

 herring of the northwestern Atlantic, by 

 Leslie W. Scattergood. Oct. 1948. 33 p. , 

 illus. 



*SSR 59. Investigations of the oyster reefs of 

 Mississippi, Louisiana, and Alabama, 

 following the hurricane of Sept. 19, 1947, 

 by James B. Engle. Nov. 1948. 70 p. , 

 illus. 



SSR 60. § 



*SSR 61. Conditons affecting shellfish pro- 

 duction in Lynnhaven Bay, Virginia, and 

 the possibilities of improving them by in- 

 creasing tidal flow, by Walter A. Chip- 

 man, Jr. Dec. 1948. 20 p. , illus. 



*SSR 62. A survey of the Columbia River and 

 its tributaries with special reference to 

 its fishery resources. 2. Washington 

 streams from the mouth of the Columbia 

 River to and including the Klickitat River 

 (Area 1), by Floyd G. Bryant. Jan. 1949. 

 110 p. , illus. 



*SSR 63. Summary of oyster farming experi- 

 ments in South Carolina 1939-1940, by 

 R. O. Smith. Apr. 1949. 20, [17] p. , 

 illus. 



*SSR 64. A bibliography of lobster culture, by 

 Leslie W. Scattergood. Jan. 1949. 26 p. 



*SSR 65-66. § 



*SSR 67. The production and the fishing 



methods of the Maine herring industry 

 with notes on the 1947 season, by Leslie 

 . W. Scattergood. Mar. 1949. 26 p. , illus. 



105 



