American Fisheries Society. 261 
tacked on the inner side of the board so that there was a fence 
42 inches high. Posts were placed every six feet. On the top of 
the fence was carefully fastened a piece of muslin 12 inches wide 
and extending at right angles with the fence. It was found 
necessary to place this muslin there because otherwise the frogs 
would clamber up the wire screen and escape over the top, but 
by tacking the muslin on they found a space or ceiling which 
balked them. Great care must be exercised that the muslin fits 
tight to the top of the fence, otherwise the frogs will raise the 
muslin and escape under it, Just as a boy would crawl under a 
canvass of a circus tent. In fact, at Lake Erie, although the 
superintendent thought he had everything secure more than 200 
managed to escape in one night by creeping under the muslin. 
These escaping frogs by the way invaded the neighboring yards 
and houses to the discomfort and alarm of the feminine occu- 
pants. At the Torresdale Hatchery a 12-inch planed board is 
substituted for the muslin and gives greater satisfaction. 
In caring for frogs, especially in the tadpole stage it is nec- 
essary to guard very carefully against the ravages of snakes. 
These reptiles before they were discovered devoured fully 109,000 
tadpoles at the Corry Hatchery and accomplished this feat in 
less than three weeks. I have given above the results of Penn- 
sylvania’s work thus far in frog culture. It has reason to be 
encouraged in the behef as a result it has demonstrated that a 
large number of frogs can be cared for in a very limited space 
and that with ordinary precaution and the expenditure of indi- 
vidual energy a very large and valuable industry can be built up 
in the United States. 
DISCUSSION. 
At the conclusion of his paper Mr. Meehan said: ‘There are 
one or two things that I would like to add which have occurred 
since the writing of this paper some six or seven weeks ago. I 
have stated in here that apparently the snakes were the cause 
of the loss of all frogs in the Corry hatchery. While that may 
still be the case to a considerable extent, I have reason to believe 
that there was another cause, and perhaps one that was even 
of more importance than the snakes, and that is the frogs them- 
selves. Now since writing this paper Mr. Nathan R. Buller, the 
