16 
MUSEUM BULLETIN NO. 13, 
Tabular Results of the Examination of Thirty-two Cormorants' 
Stomachs, 1914. — ( Continued ). 
No. 
Locality 
Date 
Sculpin 
Herring 
Capelin 
13 
W 
Flounder 
Tom cod 
Remarks 
201 
a 
ft 
2 
ft ft ft 
202 
« 
ft 
2 
ft ft ft 
203 
ft 
Aug. 4 
Nestling 
204 
ft 
ft 
ft 
209 
ft 
Aug. 19 
T 
York river 
210 
ft 
ft 
T 
ft ft 
ft 
ft 
ft ft 
16 
5 
1 
1 
4 
2 
T = traces, S = several. 
In No. 193 the remains could not be accurately determined except that 
they belonged to either of these species. Two more stomachs were collected 
but being absolutely empty they were not saved or recorded. 
The fragmentary remains of food in these stomachs made determinations 
difficult. However, the fine bones of herring and the angular, spinny fin-rays 
of the sculpin are too characteristic to be easily mistaken. In other cases 
species could only be recognized by the presence of ear bones (otoliths), in the 
finely comminuted masses. 
In order that no mistake should be made in recognition of these remains 
the aid of the Marine and Fisheries Department was solicited. Mr. Andrew 
Halkett of that department was, therefore, detailed to assist us and he person- 
ally passed upon all the material here presented. 
SOME GENERAL PRINCIPLES BEARING UPON THE 
ARTIFICIAL PROPAGATION AND INCREASE 
OF SALMON AND OTHER SPECIES. 
As the investigation of the influence of cormorants upon 
salmon has brought up questions of damage done by other 
species of birds, it seems well to discuss some general principles 
that should have consideration in dealing with this and allied 
subjects. These may seem of a speculative character, but they 
are really fundamental principles, founded on proven examples 
