Black tumor of the catfish, by Raymond C. Osburn, p. 9.
Digestive enzymes in poikilothermal vertebrates: An investigation of enzymes in fishes, with comparative studies on those of amphibians, reptiles, and mammals, by Walter A. Kenyon, p. 181.
Fishes of the Republic of El Salvador, Central America, by Samuel F. Hildebrand, p. 237.
Fur-seal industry of the Commander Islands, 1897 to 1922, by Leonhard Stejneger, p. 289.
Growth and age at maturity of the Pacific razor clam, Siliqua patula, by F.W. Weymouth, H.C. McMillin, and H.B. Holmes, p. 201.
Growth and degree of maturity of chinook salmon in the ocean, by Willis H. Rich, p. 15.
Index, p. 333.
List of errata, p. IV.
Seasonal distribution of the plankton of the Woods Hole region, by Charles J. Fish, p. 91.
Table of contents, p. III.
Variation in the maximum depth at which fish can live during summer in a moderately deep lake with a thermocline, by Frank Smith, p. 1.
Electronic reproduction. Chester, Vt.: NewsBank, inc., 2007. Available via the World Wide Web. Access restricted to Readex U.S. Congressional Serial Set subscribers.