XL REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



The cost of fertilized eggs at this station was a little less than 1 cent 

 for four eggs. 



The eggs were kept in the hatchery from February 27 until April 2, 

 before they were shipped. 



35,000 eggs were received from Grand Lake Stream at the Cold Spring 

 Harbor Station. The fry were deposited iu the waters of New York and 

 New Jersey. Eggs of this species were received from Grand Lake 

 Stream, Maine, at the Wytheville Station, where they were hatched 

 and the fry deposited in the Shenandoah River, Virginia. 



90,000 eggs were sent to foreign countries in 1887 and 60,000 in 1888 ; 

 their distribution is recorded elsewhere. 



The Rainbow Trout (Salmo widens). 



Eainbow trout are reared at Baird Station, California, and also at 

 Northville, Michigan, and Wytheville, Virginia, and by various State 

 commissions. The spawning season of this species at Baird usually 

 closes about May 1, but in 1888 some females continued spawning un- 

 til the end of May. Eggs were taken from January 1 to April 26, and 

 some large trout continued spawning through May. 468 trout yielded 

 443,500 eggs, an average of 948 eggs each. 



The best results obtained at Northville, Michigan, since the species 

 was brought there, were secured during 1888. The egg-taking season 

 lasted from December 8 to May 4. During the season 8,578 yearling 

 fish were planted in open streams, lakes, and ponds, in Michigan, Mis- 

 souri, Ohio, Indiana, Arkansas, Tennessee, and Kansas. 



During the last fifteen days of the hatching period of the rainbow 

 trout eggs, the loss is less than one-tenth of 1 per cent. The greatest 

 number of eggs taken from a single female was 2,000. This species is 

 very successfully bred at the Wytheville Station, which has become one 

 of the most important distributing points for foreign as well as home 

 applicants. 



The prominent feature of the work at this station is the large dis- 

 tribution of yearlings, amounting, in 1888, to 18,618 ; besides these, 150 

 3-year-olds were liberated. 



Eggs of the rainbow were received at Cold Spring Harbor in March, 

 1888, from Baird Station, California. These were hatched and dis- 

 tributed in New York waters. The rainbow trout are unsatisfactory 

 breeders at Cold Spring Harbor. From 6 fish less than 2,000 eggs 

 were taken ; and of these about § were impregnated, a larger proportion 

 than usual. 80,000 eggs were shipped to foreign countries, in exchange, 

 in 1887, and 78,000 in 1888. These are referred to in the tables. 



The Brown Trout (Salmo fario). 



This species was introduced at the Northville Station in 1883. The 

 results obtained with the fry have not been satisfactory during the first 

 3 months of their lives ; after that, the loss is insignificant. 



Id June of 1888, Mr. Dean caught from the creek, adjacent to the 

 Northville hatchery, a brown trout 22 inches long, and weighing 4 



