XXXV 
The work of collecting the eggs and hatching them out was 
continued with great success until the 10th of June, when 
the fishing in Maryland waters ceases by limitation of law. 
During the forty*five days in which the work was conducted 
by Mr. Clark, the force under his direction examined num- 
bers of shad, finding about 503 ripe females, from which 
they secured 11,015,000 eggs. Over 9,515,000 fish w T ere pro- 
duced from these eggs, and were either deposited in the local 
streams or shipped to other waters. 
In the period of thirteen days consumed in similar work 
by the corps on machinery-barge ISTo. 2, under Mr. John 
S. Saunders, of Baltimore, the men examined 4,859 shad, 
and found 112 ripe females. From these fish, by using 
the milt from 119 males, they obtained 1,900,000 eggs, 
hatching out 1,252,000 young fish, most of which were placed 
in local waters. The tables accompanying this report show 
in detail the work at the three stations. 
On the 4th of May all the eggs secured before the close of 
the fishing season at Havre de 'Grace were hatched out, 
and the machinery and equipment towed to Baltimore har- 
bor and stored. The estimates of eggs and fish were based 
on the supposition that a healthy ripe shad would produce 
20,000 eggs. During the season Mr. Clark studied the sub- 
ject with care. Having counted the number of eggs that 
w r ould cover a square inch of space, and calculating there- 
from the total yield of several good fish, he found that the- 
average would be nearer 30,000 than 20,000. It has, how- 
ever, been the custom with the Maryland Commission to take 
the last mentioned number as the basis of calculation. 
From an examination of the reports of the Hew York Com- 
missioners, we find that they estimate the yield of shad on 
the Hudson River at a much higher figure. 
Of the fish produced at Havre de Grace, 7,757,000 were 
deposited in the waters of Maryland. 
