XXVI 
later than the period last mentioned, as the fisheries have- 
closed on or before the 1st of May. Dr. Capeheart reports 
the young rock as appearing in large numbers in the month 
of August, in Salmon Creek, near the shad-hatching station. 
As the presence of large numbers of young rock has never 
been noticed in this locality before, it is probable that those 
referred to as appearing in the month of August were the 
product of the eggs obtained on the 6th of May, and artifici- 
ally hatched; for, as already stated, maily hundreds of thous- 
ands of eggs were thrown overboard while rinsing and ma- 
nipulating them, and in addition, the vessels in which the rock 
were hatched were so constructed as to render their escape 
easy, as soon as they were freed from the eggs. It is matter 
of regret that the discovery of ripe rock — for which constant 
search had been made during six years — should have been 
so unexpected as to find us totally unprepared to make a 
thorough success of our experiments, or to observe the devel- 
opment of the eggs, with that care which their importance 
demands. We trust, however, that in the future we will 
have an opportunity of making a more careful study of this 
fish, and of hatching it on a scale sufficiently large to insure 
practical benefits therefrom. 
Shad — Alosa sapadissima. 
The success which attended the experiment of establishing 
a shad hatching station on Albemarle Sound during the pre- 
vious year caused Prof. Baird to desire a continuance of the 
work during last spring in North Carolina. Although our 
efforts to transfer the fish hatched at that point to Maryland 
waters had not proved successful, yet we deemed it of great 
importance to co-operate with Prof. Baird in this work, espec- 
ially as it was a portion of his programme to remove his entire 
equipment from Albemarle Sound, at the close of the season 
in that latitude, to the Head of the Bay, and continue in Mary- 
land waters the work of shad hatching. We did not propose 
to attempt the removal of the fish from that point to our own 
streams. Our object in desiring to assist the United States 
