go Fish Cultural Association. 
Mr. -Rosert, B. \RoosEveLT) yread’:a paper on) the) Sie- 
productive Power of Eels.” 
REPRODUCTIVE ,HABITS JOR (EELS: 
The trout-ponds on Long Island are infested with eels, 
which are undoubtedly very injurious to the fishing and 
destructive to the trout. These ponds communicate directly 
with the Great South Bay, which is a long and narrow lagoon 
on the’ south ‘side of The islamd;) Hels are not only tamen 
in the ponds, which, of course, are wholly fresh, cold, and 
springy; but in much larger numbers in the saline water 
of the bay, which is strongly impregnated with salt, al- 
though somewhat less so than the ocean. Having pur- 
chased a country-place, including a trout-pond, on Long 
Island, I determined to study the habits of these fish, which, 
while pernicious to trout, are exceedingly beneficial and 
valuable to man, and of which little has been accurately 
determined. With this object in view, I built below my 
pond two small preserves, leading one into the other, and 
the upper one connected with the main pond by a wooden 
trough. In the lower pond I had nothing at first, but af- 
terwards some trout of from one-quarter to one-half a 
pound in weight. In the upper preserve were placed 
six hundred California salmon, from those hatched in the 
New York Aquarium, and the trough was half-filled with 
sand and gravel to hatch a few thousand trout-eggs. These 
arrangements were merely temporary, as I had great doubts 
about their working satisfactorily. Nearly ten thousand 
trout-eggs were laid down, and hatched beautifully by April 
rst, the loss .being immaterial... A’ few young eels) ner 
thicker than a lady’s hair-pin, and one inch and a half long. 
passed the: screens, and wefe, seen in, the troughs.) |) Tey 
