J. PISCICULTURE AND THE FISHERIES. 425 



like ; and he proposes also to exclude all reptiles, birds, and 

 mammals. 15 A, Sept. 18, 376. 



FISH AT GREAT DEPTHS. 



For the purpose of illustrating the physical conditions to 

 which fish are exposed at great depths, M. Moreau has sub- 

 jected them to a pressure of ten atmospheres in a vessel. 

 He finds that by bringing this on gradually the fish do not 

 experience any ill effect, but that on suddenly relaxing the 

 pressure they die rapidly with hemorrhage, the blood be- 

 coming spumous. This phenomenon he considers due to 

 the disengagement of the gas which the blood had dissolved 

 in large quantity. 8 B, July 24, 96. 



PISCICULTUEAL PRIZES. 



Among the prizes recently decreed by the Societe d'Ac- 

 climatation of Paris, at its annual public session on the 7th of 

 May, was one of five hundred francs to M. Carbonnier for 

 the exhibition of specimens of American Fanclula cyprino- 

 donta, characterized as being a fish of very excellent flavor. 

 It is difficult to understand that this fish, well known in the 

 United States, is now considered as one of importance, there 

 being so many others of superior size and rapidity of growth 

 that could have been selected. As M. Carbonnier exhibited 

 specimens born in Paris, his prize was doubled, and he re- 

 ceived one thousand francs. 



On the same occasion a medal of the first class was given 

 to Seth Green this in addition to the grand gold medal 

 which he received in 1872. This last-mentioned prize was 

 in return for the transmission to Paris during the last year 

 of fertilized eggs of various species of salmonidre. 



The introduction of the California salmon into the East- 

 ern United States has also been considered by the French 

 society a matter of very great economical importance ; and 

 although not specially interested at present in the species, 

 they have decreed to Mr. Livingston Stone a second-class 

 medal for his superintendence of the United States breeding 

 establishment, and also similar honors to Mr. G. H. Jerome, 

 one of the Fish Commissioners of Michigan, and to Mr. Crouch, 

 of Jackson, for hatching out and distributing the young of 

 these fish in the St. Joseph, the Kalamazoo, and Grand Rivers. 



