Salt-Water Fish. 297 



Herrick announced his discovery that the lobster was 

 a biennial spawner in his extensive and most complete 

 life-history of the lobster which has ever been pub- 

 lished ; thus anticipating Prof. Carman and myself, who 

 were studying on the same lines. In the Report of the 



TOM COD. 



New York Fish Commission (1892), pages 50-57, I 

 refer to this, and give Prof. Carman's report on the 

 lobster to the Massachusetts Fish Commission (Decem- 

 ber, 1891). The United States Fish Commission Bul- 

 letin for 1893, pages 281-286, printed my article from 

 the "Scientific American Supplement" in full. I can 

 only quote a few extracts : 



''The female spawns but once in two years. Notes 

 made on the eggs of lobsters in the New York Aqua- 

 rium in 1876-78 show that they hatched before July, or 

 when the water reached a temperature of about 60 de- 

 grees Fahr. In 1891 I began the hatching of lobsters 

 for the New York State Fishery Commission, and 

 found that eggs taken from lobsters from the middle to 

 the last of July did not hatch that year. Then it seemed 

 as if the lobster might be a biennial spawner, but I did 

 not dare to say so. A report of my observations sent to 

 Prof, Samuel Carman, of the Museum of Comparative 



