18 BULLETIN OF THE UNITED STATES FISH COMMISSION. 
orous. The color of the eggs is of a yellowish tint, tinged with a purple 
brown, before hatching, thus producing an unhealthy appearance. 
The association is also indebted to the U. S. Fish Commission for 
25,000 eggs of the landlocked salmon ( Salmo sebago), which reached 
the hatchery on March 20 in excellent condition. They were care- 
fully packed on trays surrounded in muslin, with moss between each 
layer of eggs. Instead of sawdust, wet moss was closely packed 
around the nest of trays, to which fact I partly attribute the success of 
the shipment. The instance cited is probably unparalleled in the re- 
cords of transmitting ova, there being only three dead eggs on arrival, 
and only 30 were found dead on the next morning. 
The sight presented in the hatchery tanks is very interesting. The 
different colors of the gill-sacs of the various fish, especially of the dif- 
ferent kinds of trout, is well seen in the struggling masses of tiny 
forms, which appear to be in a healthy condition. Their aptitude for 
congregating in corners of the hatching-trays shows not only their in- 
stinct to avoid danger, but also their physical condition. Fish that are 
sickly are usually found apart from the others, as not having the power 
to cope with them. It may be interesting to compare the habits of the 
whitefish on coming from the eggs with those of the trout and salmon, 
as the whitefish act very differently from these other fry. The white- 
fish is of a light gray color and about one-quarter inch long when 
hatched. Upon emerging from the egg it lies dormant for about two 
hours, after which time it is generally in a state of activity. Its in- 
fantile powers of locomotion are great, and its capacity for exercising 
them is unusual. Darting hither and thither continually, with their 
large bead-like eyes prominently displayed, they are an interesting 
sight. Trout and salmon, on the other hand, preserve a quieter atti- 
tude on entering upon their career, and are not in perpetual motion. 
Much effort is being made to acclimatize and propagate the American 
whitefish in England, though considerable difficulty exists in securing 
suitable places for it. Evidences of its capacity for thriving in this 
country are not wanting. The Marquis of Exeter last year turned into 
a portion of his water at Burghley Park some fry of this species as an 
experiment, and now they are 7 inches long. A few weeks ago one was 
taken at Delaford 6 inches in length. The fish are now yearlings, and 
have consequently passed through the experiences and vicissitudes of 
all seasons, and may therefore be considered to have become accus- 
tomed to their present existence. 
The most difficult problem in whitefish culture is how to feed them 
upon losing their sacs. After experimenting with multifarious diet, 
aries, I finally settled upon one which has hitherto proved efficacious. 
This consists of a finely-powdered meal, made by Mr. William Burgess, 
of Malvern Wells. This meal is mixed with the blood of animals and 
with water, in the following proportions : 2£ parts meal, J part blood, 
