1899-1900.] Dr Noel Paton and Mr Newbigin on Salmon. 47 
Table III. — Showing the Amount of Solids in Muscles and 
Ovaries of Female Salmon leaving the Sea throughout the 
Year. 
Nov. 
Feb. 
Mar. 
Apr. 
May 
and 
June. 
July 
and 
Aug. 
Oct. 
and 
Nov. 
Kelts. 
Muscles, . 
2481 
2214 
2355 
2599 
2210 
2270 
1750 
946 
Ovaries, . 
23 
24 
24 
33 
47 
72 
545 
9 
Total, 
2504 
2238 
2379 
2632 
2257 
2342 
2295 
955 
Such a table fully confirms the conclusion previously arrived at — 
That the salmon goes to the sea to feed and returns to 
THE RIVER WHEN IT HAS ACCUMULATED ITS FULL STORE OF 
NOURISHMENT IRRESPECTIVE OF THE CONDITION OF THE REPRO- 
DUCTIVE ORGANS. The factor determining migration from 
sea to river is not the nisus generativus, but the state of 
NUTRITION. 
B. Male Salmon. 
The number of male salmon examined in the course of the 
previous investigation was so small that it was considered unsafe 
to form any definite conclusions. 
During the past two years every effort has been made to procure 
a supply of male fish, but without much success. The very small 
number of males which have been procured seems to indicate that 
they must be greatly outnumbered by female fish. 
The following tables give the results of our examinations and 
analyses of the male salmon sent to us. 
