[37] PROPAGATION OF WHITEFISH AT NORTHVILLE, MICH. 589 
ticles, more perfectly held in suspension by the water, would be taken 
in the mouth as before, and many of these they succeeded in swallowing, 
At the present writing (May 25) eight of the twenty specimens fed on 
liver and kidney since April 25 remain. Seven of these have attained 
lengths varying from ? to 1} inches, while one has grown to fully 14 
inches in length. 
From the fact that the fry in the spring, being deprived of animal food, 
lived but a short time after the consumption of the sac, and also from 
the fact that @ portion of those supplied with animal food are to-day 
alive and growing, the evidence is clearly established that animal life 
is absolutely essential for their subsistence in early life, whatever the 
adult fish may feed upon. 
< 
SUMMARY. 
Number of eggs deposited in hatching boxes and jars...... 13, 780, 000. 
Number ofieres shipped... .... 0. ....0 eee ee sos 3, 125, 000 
iINumber of fish’distributed.. 25....-.---..-2.4-- 9, 265, 000 
DOSS ie SEARO SS Ion ae a 1, 390, 000 
—— 13, 780, 000 
Expenses of the work, including repairs to hatchery and 
ponds, and expenses of distribution of fry............. $4,003.35 
Lessinventory of property on hand paid from above amount. 459.80 
$3, 543.55 
Comparing the number of eggs shipped and fish distributed with the 
number of eggs procured, it will be seen that the average percentage 
- brought forward was, approximately, 90, and the average cost per mil- 
lion, $286. 
