54 Proceedings of Boyal Society of Edinburgh. [sess. 
The largest runs of sea trout occur at an earlier date than the 
largest runs of salmon, and the figures showing this are opposite 
dates a little earlier than the dates of the largest runs in Talla. 
This gives us, then, a natural preliminary condition to that already 
described. We have the fish increasing in numbers, first in Tweed, 
then we find them in Talla. 
The condition is sufficiently obvious from the following fort- 
nightly results : — 
1st fortnight 
Salmon. 
23 
Sea Trout. 
1 
2nd 
41 
35 
3rd 
?> 
26 
91 
4th 
n 
35 
38 
5th 
>} 
144 
4 
6 th 
201 
2 
7th 
») 
19 
0 
8th 
}} 
23 
1 
512 
172 
As also was the case in Talla, the heaviest fish were observed 
when the greatest number were recorded. Till the sixth week 
very few salmon over 1 2 lbs. in weight were noticed ; on the 
8th Jan., however, heavy fish appeared in numbers, and the 
figure, 201, which represents the total number of salmon during 
the sixth fortnight, is made up of 152 fish, estimated as of more 
than 12 lbs. weight. 
Turning now to the number and position of salmon and sea trout 
redds , we find that the total for the area under consideration is 
71, 11 being in Talla and 60 in Tweed. The majority of redds 
were noticed only after the fish had moved away, or been taken 
away by poachers, but on 24 of them fish were seen in the act of 
spawning. Of the fish on these redds, 16 were salmon and 8 were 
sea trout. 
I have the dates of the 24 redds, but with such a small number 
out of 71 we can hardly draw any very reliable conclusions. The 
first salmon redd seems to have been noticed on 20th Nov. in 
Talla, the last on 15 th Feb. in Tweed. The first sea trout 
