969. Physical oceanography of Gulf of Maine. By Henry B. 



Bigelov;, Bulletin of the United States Bureau of 

 Fisheries, Department of Commerce, 1924 (1928), part II, 

 vol, XL, pp. 511-1027. 



970. Variation in the maximum depth at which fish can live dur- 



ing summer in a moderately deep lake with thermocline. 

 By Frank Smith. Bulletin of the United States Bureau of 

 Fisheries, Department of Conunerce, 1925 (1926), vol. XLI, pp. 9. 



971. Progress in biological inquiries. By V.'illis H. Rich. Appendix 2 



to Report of the United States Commissioner of Fisheries for 



1924 (1925), pp. 36. 



972. Black tumor of catfish. By Raymond C. Osburn. Bulletin of 



the United States Bureau of Fisheries, Department of Commerce, 



1925 (1926), vol. XLI, pp. 7, 2 illus. 



973. Alaska fishery and fur-seal industries in 1923. By V/ard T. 



Bovjer, Appendix 3 to Report of the United States. Commis- 

 sioner of Fisheries for 1924 (1925), pp. 96, 11 illus. 



974. Growth and degree of maturity of Chinook salmon in ocean. By 



liVillis H. Rich. Bulletin of the United States Bureau of 

 Fisheries, Department of Commerce, 1925 (1926), vol. XLI, 

 pp. 78, 34 illus. 



975. Seasonal distribution of plankton of VJoods Hole Region. By 



Charles J, Fish. Bulletin of the United States Bureau of 

 Fisheries, Department of Commerce, 1925 (1926), vol. XLI, 

 91 pp., 81 illus. 



976. Fishery industries of United States, 1923. By Oscar E. Sette. 



Appendix 4 to Report of the United States Commissioner of 

 Fisheries for 1924 (1925), pp. 221. 



977. Digestive enzymes in poikilothermal vertebrates. An investi- 



gation of enzymes in fishes, with comparative studies on 

 those of amphibians, reptiles, and mammals. By VJalter A. 

 Eenyon. Bulletin of the United States Bureau of Fisheries, 

 Department of Commerce, 1925 (1926), vol. XLI, pp. 22, 



978. Propagation and distribution of food fishes, 1924. By Glen C. 



Leach. Appendix 5 to Report of the United States Commissioner 

 of Fisheries for 1924 (1925), pp. 82, 2 illus. 



979. Iodine content of preserved sea foods. By Arthur W. V/ells. 



Appendix 6 to Report of the United States Commissioner of 

 Fisheries for 1924 (1925), pp. 6. 



980. Goldfish: Their care in small aquaria and ponds. By E. C, 



Fearnow. Appendix 7 to Report of the United States Com- 

 missioner of Fisheries for, 1924 (1925), pp. 16, 6 illus. 



91 



