3*64 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



age is now transferred to the shipping case and surrounded with fine, dry, 

 hardwood shavings, firmly champed in. The material which separates 

 the eggs from the outside atmosphere is a poor conductor of heat, and 

 the eggs are therefore carried through to destination in excellent con- 

 dition, with very rare exceptions. 



The following tables give a condensed summary of the work for the 

 past seven years. They are somewhat incomplete, owing to the fact 

 that the details of work were not formerly preserved with as much care 

 as we are now accustomed to observe. 



Season of 1874-'75. 



Eggs placed in hatching boxes : 



Wliitefish 2,500,000 



Lake trout  - 150,000 



Brook trout 100, 000 



California salmon (in poor condition) . - 50, 000 



"Wall-eyed pike (Stizostedium americanum) 25, 000 



Fish planted. 



Whitefish, 2,000,000 for Michigan Commission; 100,000 for United 

 States Fish Commission. 



Lake trout, 125,000 for Michigan Commission. 



Brook trout, 50,000 sold to private parties; 25,000 planted in adjoin- 

 ing States; 10,000 retained in ponds. 



California salmon, 15,000 distributed in Ohio for United States Fish 

 Commission ; 10,000 retained in ponds. 



Wall-eyed pike, 20,000 distributed in inland waters of Michigan. 



During this season eggs of whitefish and lake trout were contracted 

 for at the rate of $1 per thousand. 



The requirements of the work necessitated the employment of extra 

 help, as follows: Twenty-five girls for forty days, at 75 cents per day; 

 three men for five months, at $50 per month. 



The girls were employed to separate the dead and living ova. 

 Seated before a long, shallow trough of running water, facing a row of 

 windows and supplied with feathers and tweezers, the work proceeded 

 by picking out the dead eggs one by one from the wire trays, which 

 were transferred from the hatching boxes to the "picking trough." 



Season of 1875-'7G. 



Eggs placed in hatching boxes: 



' Wliitefish 3, 300, 000 



Brook trout 50, 000 



California salmon 0S8, 000 



