312 
BULLETIN OF THE BUREAU OF FISHERIES 
Gieser, S. W. 1924b. The differential death rate of the sexes among animals, with a suggested 
explanation. Washington University Studies, vol. XII, series no. 1, 1924, pp. 73-96. St. 
Louis. 
Haakh, Theodor. 1929. Studien fiber Alter und Wachstum der Bodenseefische. Archiv fur 
Hydrobiologie, Bd. 20, Heft 2, 1929, S. 214-295. Berlin. 
Hart, John L. 1928. Data on the rate of growth of pike perch ( Stizostedion vitreuvi) and sauger 
(S. canadense) in Ontario. University of Toronto Studies, Publications, Ontario Fish. Res. 
Lab., no. 34, 1928, pp. 45-55, 3 figs. Toronto. 
Hart, John L. 1931. The growth of the whitefish, Coregonus clupeaformis (Mitchill). Contrib., 
Canadian Biol, and Fish., N. S., vol. VI, no. 20 (series A, general, no. 5), April 8, 1931, pp. 429- 
444, 11 figs. Toronto. 
Hart, John L. 1932. Statistics of the whitefish ( Coregonus clupeaformis) population of Shake- 
speare Island Lake, Ontario. University of Toronto Studies, Publications, Ontario Fish. 
Res. Lab., no. 42, 1932, pp. 1-28. Toronto. 
Hecht, Selig. 1916. Form and growth in fishes. Contrib., Zoological Laboratory, Museum 
of Comparative Zoology, Harvard College, Cambridge, no. 275. Jour. Morphology, vol. 
XXVII, no. 2, 1916, pp. 379-400. Philadelphia. 
Heincke, F., and A. Buckmann. 1926. Die Ueberfischung der Nordsee und die Wirkungen der 
Kriegsschonzeit auf ihren Schollenbestand. Der Fischerbote. Norddeutsche Fischerei- 
Zeitung, XVIII, Jahrg. 1926, S. 57-101, 13 figs. Hamburg. 
Higgins, Elmer. 1928a. Progress in biological inquiries, 1926. Including proceedings of the 
divisional conference January 4-7, 1927. Appendix VII, Report, U. S. Comm. Fish., 1927 
(1928), pp. 517-681. Washington. 
Higgins, Elmer. 1928b. Progress in biological inquiries, 1927. Appendix VI, Report, U. S. Comm. 
Fish. 1928 (1929), pp. 199-247. Washington. 
Higgins, Elmer. 1930. Progress in biological inquiries, 1928, including extracts from the pro- 
ceedings of the divisional conference, January 2 to 5, 1929. Appendix X, Report, U. S. Comm. 
Fish., 1929 (1930), pp. 627-739. Washington. 
Higgins, Elmer. 1931a. Progress in biological inquiries, 1929. Appendix XV, Report, U. S. 
Comm. Fish., 1930 (1931), pp. 1069-1121, 11 figs. Washington. 
Higgins, Elmer. 1931b. Progress in biological inquiries, 1930. Appendix III, Report, U. S. 
Comm. Fish., 1931 (1932), pp. 553-626, 9 figs. Washington. 
Higgins, Elmer. 1932. Progress in biological inquiries, 1931. Appendix III, Report, U. S. 
Comm. Fish., 1932 (1933), pp. 441-529. Washington. 
Higgins, Elmer. 1933. Progress in biological inquiries, 1932. Appendix II, Report, U. S. 
Comm. Fish., 1933 (1934), pp. 79-147. Washington. 
Hile, Ralph. 1931. The rate of growth of fishes of Indiana. Investigations of Indiana Lakes, 
Iff No. 2. Depart. Conser., Division of Fish and Game, Indiana, Publication No. 107, 1931, 
pp. 9-55. Indianapolis. 
Hjort, Johan. 1914. Fluctuations in the great fisheries of northern Europe viewed in the light of 
biological research. Rapp, et Prociis-Verb., Cons. Perm. Inter. Explor. Mer, vol. XX, 1914, 288 
pp., 137 figs. Copenhague. 
Hjort, Johan. 1926. Fluctuations in the year classes of important food fishes. Jour, du Cons., 
Cons. Perm. Internat. Explor. Mer, vol. 1, no. 1, 1926, pp. 5-38, 18 figs. Copenhague. 
Hjort, Johan. 1932. Remarks on the fluctuations in number and growth in marine populations. 
Rapp, et Proces-Verb., Cons. Perm. Internat. Explor. Mer, vol. LXXX, no. IX, 1932, pp. 3-8. 
Copenhague. 
Hodgson, W. C. 1927. Preliminary note on experiments concerning the selective action of drift 
nets. Jour, du Cons., Cons. Perm. Internat. Explor. Mer, vol. II, no. 3, 1927, pp. 356-360, 
3 figs. Copenhague. 
Hodgson, W. C. 1933. Further experiments on the selective action of commercial drift nets. 
Jour, du Cons., Cons. Perm. Internat. Explor. Mer, vol. VIII, no. 3, 1933, pp. 344-354. Copen- 
hague. 
Huitfeldt-Kaas, Hartwig. 1917. Mjpsens fisker og fiskerier. Det Kgl. Norske Videnskabers 
Selskabs Skrifter, Nr. 2, Heft 1, 1916 (1917), iv + 257 S. Trondhjem. 
Huitfeldt-Kaas, Hartwig. 1927. Studier over aldersforholde og veksttyper hos norske fersk- 
vannsfisker. Nationaltrykkeriet, 1927, S. 5-358. Oslo. 
