124 Thirty-fifth Annual Meeting 
All of the survivors of the starvation treatment in 1905 were 
kept through the season until October, each lot by itself, and fed 
and otherwise treated as nearly as possible in a uniform man- 
ner, except as to space, an exception that I shall refer to again. 
These experiments were tried in wooden troughs, all 1284 inches 
wide, and with a water depth of 4 or 5 inches. 
First let us look at the experience with Atlantic salmon. 
There were two series of experiments with this species, each se- 
ries embracing four lots. The lots of the first series numbered 
at the start each 1,000 advanced fry, and each lot was main- 
tained in a trough ten feet long. The lots of the second series 
numbered 500 each, of the same age and origin, and they were 
kept in troughs five feet long. In each series the fasts were for 
5, 10, 15 and 20 days respectively. It was found, as stated in 
the former paper, that for a period beginning with the com- 
mencement of the fast and extending to 15 days after its close 
in each case, Atlantic salmon that had fasted for 5 days suf- 
fered a hghter mortality than those of the same origin that were 
fed promptly; that those fasting 10 days suffered a lighter mor- 
tality in one case and a heavier in the other; but that the fasts 
of 15 and 20 days were followed by a greatly increased mortality 
in both series. This indicated that 10 days was perhaps longer 
than such fry could be safely compelled to fast under the given 
circumstances. 
For the purpose of comparing the death statistics of these 
fishes through the rest of the season I have arranged a statement 
in which the number of fish left at the beginning of each month 
is made the basis of the percentage for that month. On this basis 
it is found that the losses in both series of Atlantic salmon were 
much heavier in the cases of the most extended fasts; for August 
the losses were exceedingly light,—but a trifle heaviest among 
those that had fasted 15 and 20 days; for September the differ- 
ence, though almost extinguished, still holds against the 20-day 
fasters of the second series, while in the first series the heaviest 
losses followed the 10-day fasts, next coming the 20-day and 5- 
day fasts successively, and the loss following the 15-day fast be- 
ing the lightest of all. These September losses were, however, 
exceedingly small, the heaviest being less than one per cent. 
On the 17th of October, all these Atlantic salmon were 
