THIRTEENTH ANNUAL MEETING. 45 
specimens said to represent fairly those that winter, through the 
ice, except that some very small ones had been excluded from 
the lot. These had the form and color of adults, but the largest 
of them weighed only eighteen ounces and measured only fif- 
teen inches in length, and from this size there was a very regu- 
lar descending series down to ro} inches in length and 5 ounces 
in weight. 
It is much to be regretted that we do not possess the data 
requisite to the discussion of the causes that have led to this 
diversity of size between the fish of different parts of the same 
lake system, or to the recent increase in the size of the Grand 
lake fish. ‘ 
RATE OF GROWTH. 
At Grand Lake Stream, at the spawning season, we have found 
six distinct classes of salmon, distinguished mainly by size, as 
follows: 
First class. This is equivalent to the “parr” or “pink” stage 
of anadromous salmon. It is characterized by the presence of 
dark transverse bars and brilliant red spots on the sides. In size 
they are very uniform. Of nineteen of them captured October 
15th, the smallest was 2 9-16 inches long, the largest 3% inches 
long, and the average 3% inches. Their weight was not ascer- 
tained but must be about 2-10 ounce. They have thus far been 
observed only on the gravelly shallows of the stream. They 
were present before artificial breeding began, and undoubtedly 
represent a normal stage of growth. Parr of about the same 
size are also found in the stream at the beginning of summer, and 
occasionally in great numbers. Such was notably the case in 
1882, and also, though not to an equal extent, in 1883. Mr. Mun- 
son, our foreman, who is very careful and exact in his state- 
ments, reported that in June, 1882, at the time when the driving 
of logs through the gates was in progress, there were great num- 
bers of these little fish below the dam. While the gates were 
open and the stream full of water, they were little inclined to 
bite, but when the gates were closed and the water fell they 
eagerly pursued any line, crowding each other and leaping out 
of the water after an approaching fly or other bait. Meeting 
