388 Fisurinc 1 American WatTERS. 
water was poured off, with the exception of sufficient to keep 
the ova submerged, and fresh supplied in its place. This also 
was poured off, and fresh substituted previously to removing 
the impregnated spawn to the boxes prepared for its recep- 
tion. 
In discharging the ova from the abdomen of the female all 
violence was carefully avoided. If, on examination, the ova 
were found to be immature, the fish was immediately return- 
ed to the river, and others in a more advanced stage taken. 
When a sufficient quantity of spawn was collected, it was at 
once removed to the hatching-ground. An amount propor- 
tioned to the size of the boxes was carefully poured in at the 
head of each, the action of the water scattering it pretty 
equally among the crevices of the stones. .A temporary in- 
creased flow of the stream easily distributed it wherever it 
might happen to be too closely crowded together. Out of 
24,000 roe deposited in the spawning-boxes, 20,000 were suc- 
cessfully hatched. 
MR. JOHN GILLONE’S PROCESS OF PROPAGATING TROUT AND 
SALMON, 
As owner of the “Longland Fishery,” the opinion of Mr. 
Gillone is received with much confidence and respect through- 
out England. “In the first place,” he states, “we have one 
mill-dam hecked at top and bottom.” (As the word heck 
means “an engine or instrument for catching fish,” we sup- 
pose that he means a peculiar net or singularly constructed 
weir for preventing trout or salmon from passing it, and ren- 
dering them lable to capture in the attempt.) The upper 
part of the dain was laid with gravel suitable for salmon or 
trout to spawn in naturally. There is also a very suitable 
stream for trout or salmon to deposit their spawn, and, so 
soon as our fishing season is about to close, we take the num- 
ber of fish required to fill our breeding-boxes with fecundated 
ova, and put them into the dam, and keep them there until 
we see them beginning to spawn. (Spawning is sometimes 
