280 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



under the name of Salveliyms fonti7iaUs,is an American species of gray- 

 ling {Oinble- Chevalier), which inhabits the little watercourses rather 

 than the lakes, whence it gets its common name of brook trout in the 

 United States. It is an excellent fish, of sluggish habits, which can be 

 raised easily and advantageously in closed basins. [Bulleiin, March, 

 1884, p. 301.] 



Brook trout. — Mr. Gamier, president of the Linnsean Society of 

 Northern France, forwarded a report of Mr. Lefebvre, on the results ob- 

 tained fi'om eggs of different species of salmon forwarded by the Accli- 

 matization Society. Mr. Lefebvre states that he has succeeded in projja 

 gatiug Salmo fontinalis, and that by means of artificial impregnation 

 he has obtained hybrids from this species and the common trout. The 

 eggs have been furnished by one species and the milt by the other, 

 and vice versa. The crossing of grayling (female) and Salmo fontinalis 

 (male) has been less successful, and only a few fry were obtained. 

 [Bulletin, March, 1881, p. 300.] 



Trout. — Mr. Leroy wrote from the country seat of Roussainville: 

 " I have the honor of acknowledging the receipt of some trout eggs. 

 They arrived in good condition except five, which I fear are spoiled, 

 and ten whose existence seems to me doubtful. I have not thrown 

 them away, nevertheless, but have placed them for hatching in the dif- 

 ferent vessels. My three sets of hatching api)aratus are placed each 

 under a tap, from which flows, without cessation, spring- water at the 

 temperature of 8° C. [IG^".! F.J, all in a half-darkened room. These 

 eggs appear to me to be in an advanced period of incubation ; two or 

 three have hatched already." [Bulletin, March, 1881, p. 306.] 



Salmon, trout, whitefiSS, &c. — Mr. Waguer, director of bridges 

 and roads, and manager of the fish-cultural establishment of Bouzey, 

 wrote from Epiual : 



<' Duringlast year (1883) we received from the Acclimatization Society 

 some eggs of Salmo namaycush, S. fontinalis, S. salar subsp. sebago, 

 Coregonus alhus, and G. marcena. These eggs were in very good condi- 

 tion and hatched well, in the i^roportion of 80 to 100, with the exception 

 of the landlocked salmon which gave only 50 to 100. The fry of the 

 two kinds of Coregonus, after the sacs were reabsorbed, were distributed 

 in the fish-pond of Bouzey, which is supplied by the brook of Aviere 

 as well as by the waters of the Moselle River, and whose maximum 

 depth is 15 meters [49i feet]. Moreover, we succeeded in raising a hun- 

 dred of each of these two species on the hatching tables by means of 

 little fly larvfe, microscopic insects, and finely strained beef's brains. 

 These fry were kept in a basin 1^ meters deep, and have attained a 

 length of 9 centimeters [3^ inches, about]. 



" The young of Salmo namaycusJi, Salmo fontinalis, and landlocked 

 salmon were raised on the hatching tables by means of insects, fly 

 larva?, and beef's brains. In June they were placed in breeding- 

 trenches of from 4 to 5 decimeters [about 15 to 20 inches] in dex^th, 



