1896.] NATURAL SCIENCES OF PHILADELPHIA. 245 



805. (Shows that the pigment which causes the coloration is prob- 

 ably phycocyanin). 



78 — A summary of recent progress in our knowledge of the cul- 

 ture, gi'owth and anatomy of the oyster. Forest and Stream, Nov. 

 30, 1882, Vol. XIX, pp. 351-352. 



79 — Notes on the breeding, food and cause of green color of the 

 oyster. Trans. Amer. Fish Cult. Assoc. Eleventh Ann. Meet., N. 

 Y., 1882, pp. 57-59. Also Forest and Stream, 1882, May 25th, 

 pp. 331 and 332, and June 1st, pp. 349-351. 



80 — On the green color of the oyster. Amer. Nat., 18*53, pp. 86- 

 88. 



81— A correction. Amer. Nat., 1883, pp. 98-99. 



82 — Theodore Gill and John A. Ryder. Diagnoses of new genera 

 of nemichthyoid eels. Proc. U. S. Nat. Mus., VI, 1883, pp. 260- 

 262. 



83 — Theodore Gill and John A. Ryder. On the anatomy and 

 relations of the Eurypharyngidae. Proc. U. S. Nat. Mus., VI, 1883, 

 pp. 262-273. 



84 — On the thread-bearing eggs of the silversides {Menidid). 

 Bull. U. S. Fish Comm., Ill, 1883, pp. 193-196, 4 figs, in text. 



85 — Preliminary notice of the development and breeding habits 

 of the Potomac ca.t-^&\\ Amiurw? alhidus (Le Sueur) Gill. Bull. U. 

 S. Fish Comm., Ill, 1883, pp. 225-230. 



86 — Rearing oysters from artificially fertilized eggs, together with 

 notes on pond-culture, etc. Bull. U. S. Fish Comm., Ill, 1883, pp. 

 281-294. New Zealand Journal of Science, I, No. 10, 1883, pp. 

 455-459. 



87 — Report on the abnormal appearance of some shad eggs from 

 a fish kept in confinement at Havre de Grace, Maryland. Bull. U. 

 S. Fish Comm., Ill, 1883, p. 440. 



88 — Rearing oysters from artificially imjDregnated eggs. Science, 

 I, 1883, pp. 60-62. 



89 — The law of nuclear displacement, and its significance in em- 

 bryology. Science, I, 1883, pp. 273-277. 



90 — Protozoan parasites of the oyster. Science, I, 1883, pp. 567 

 -568. 



91 — Rearing oysters from artificially fertilized eggs at Stockton, 

 Md. Science, II, 1883, pp. 463-464. 



92 — Primitive visual organs. Science, II, 1883, pp. 739-740. 



93 — The nature of heredity. The Monthly Review, Philadelphia, 

 I, 1883, No. 11, pp. 161-164. 



94 — The pedunculated lateral line organs of Gastrostomus. Sci- 

 ence, III, 1884, p. 5. Amer. Nat., 1884, p. 547, 1 fig. 



95 — On the chlorophvlloid granules of Vorticella. Proc. U. S. 

 Nat. Mus., VII, 1884, pp. 9-12, 1 fig. in text. 



96 — Theodore Gill and John A. Ryder : On the literature and 

 systematic relations of the saccopharyngoid fishes. Proc. U. S. 

 Nat. Mus., VII, 1884, pp. 48-65. 



