IO FISH—-CULTURAL ASSOCIATION. 
though beautiful shade of green; that a glass tube filled with 
impregnated ova and tightly corked at either end remained over 
night, a period of twelve hours, at'a temperature of about 65 to 
70 degrees, without change of water, and that the same eggs on 
a tray produced fish. I was particularly struck with this. Also, 
that the liberated fry is about 3-16 of an inch long; that the body 
projects beyond the posterior end of the sac only 1-22 of the 
total length; that in water at 75 degrees the sac is absorbed in 
four days and the length of the fish is then only % inch; that 
during the ten days’ confinement in jars, in water varying from 
69 to 82 degrees, the fry gained but little growth, yet consider- 
able dark coloration, and were constantly striking, as if to feed 
on drifting particles; that the eyes at time of hatching, after 
close scrutiny with a pocket glass, revealed no pigment, even 
among those hatched slowly on trays. I further observed that 
the catch of rock at Weldon this year reached 4,500. I was told 
that last year five times as many'were caught; that several years 
back as many as 300 fish of thirty pounds weight have been 
taken on one slide in a single day; that the numbers of the fish 
have steadily declined; that the river is infested with innumer- 
able catfish, reaching to millions, the great majority, in fact, 
nearly all, not exceeding a hand’s length.”’ 
SUNFISH: THEIR “HABITS” AND ' EXTERMINATION: 
BY FRED MATHER. 
A pest which the fish-culturist who has large ponds often has 
to contend with is the little fish, or fishes, for there are several 
species, which are popularly called sunfish, pondfish, pumpkin- 
seed, etc. These fish belong to the family Centrarchide, and are 
closely related to the black bass, both in structure and habits, 
an intermediate link being found in the “red eyes,” “rock bass”’ 
and the “ war-mouth” of the South. Within the district east of 
