BULLETIN OF THE UNITED STATES FISH COMMISSION. 63- 



829. Ryder, John A. Additional observations on the retardation of the 

 development of the ova of the shad. 



[In Bulletin of the U. S. Fish Commission, Vol. I, 1881, pp. 422-424 J 

 830. . Preliminary notice of some points in the minute anat- 

 omy of the oyster. 

 [In Bulletin of the U. 3. Fish Commission, Vol. II, li-8'2, pp. 135-137.] 



831. . Observations on the absorption of the yelk, the food, 



feeding, and development of embryo fishes, comprising some 

 investigations conducted at the central hatchery, Armory 

 Building, Washington, D. C, in 1882. 

 [In Bulletin of the U. S. Fish Commission, Vol. II, 1882, pp. 179-205, fig. 1.] 



832. . The microscopic sexual characteristics of the Ameri- 

 can, Portuguese, and common edible oyster of Europe com- 

 pared. 

 [In Bulletin of the U. S.Fish Commission, Vol. II, 1882, pp. 205-215.] 



833. . Translator. Report relative to the generation and 



artificial fecundation of oysters, addressed to the minister of 

 the marine and the colonies. By M. Bouchon-Brandely. 

 [In Bulletin of the U. S. Fish Commission, Vol. II, 1882, pp. 319-338.] 



834. . Translator. On the sexuality of the common 



oyster (0. edulis) and that of the Portuguese oyster (0. angu- 

 lata). Artificial fecuDdation of the Portuguese oyster. ByM. 

 Bouchon-Brandely. 

 [In Bulletin of the U. S. Fish Commission, Vol. II, 1882, pp. 339-341.] 



835. . Translator. Researches on the generative organs 



of the oyster (0. edulis). By P. P. C. Hoek. 



[In Bulletin of the U. S. Fish Commission, Vol. II, 1882, pp. 343-345.] 



836. . Translator. A simple test to learn if fish ova are 



impregnated. By Prof. M. ISTussbaum. 



[In Bulletin of the U. S. Fish Commission, Vol. II, 1882, pp. 347-348.] 



837. . On Camarophyse?na, a new type of sponge. 



[In Proceedings of the U. S. Nat. Mus., Vol. Ill, 1880, pp. 269-272]. 



838. . Translator. On the genitalia of male eels and 



their sexual characters. By S. Th. Cattie. 

 [In Proceedings of the U. S. Nat. Mus., Vol. Ill, 1880, pp. 280-284.] 



839. . A note on the organ of Bojanus in Ostrea virginica 



Gmelin. 

 [In Bulletin of the U. S. Fish Commission, Vol. II, 1882, pp. 345-347.] 



840. . On the mode of fixation of the fry of the oyster. 



[In Bulletin of the U. S. Fish Commission, Vol. II, 1882, pp. 383-387, figs. 9.] 

 841. Sargent. W. H. Statement concerning the menhaden fisheries. 



[In Report of the Commissioner for 1877, Part V, 1879, pp. 373-375.] 



