ne The Salmon 
allowed them to fall to the bottom. I have dropped sweets in the 
same way, and the fish took them, but treated them as they did the 
prawn. A few years ago, for the sake of experiment, I obtained 
leave to kill as many kelts as I wished during the last week of 
April, at which period the river is full of smolts. I killed many of 
them, but failed to find any food in their stomachs. At the same 
time I killed many sea-trout kelts, weighing, in some cases, 3 and 
4 lbs. In most of these, however, I found flies and the larvz 
of the early Ephemere and caddis-flies in process of digestion. 
I have examined thousands of salmon in our fish-house, but have 
never found any trace of food in any of them; neither have our 
men, who have had hundreds of thousands through their hands. 
As I have already said, it is not so with sea-trout and brown trout. 
They are often found gorged with parr and smolts. In the stomachs 
of sea-trout caught in tidal waters are often found sand-eels, sparling, 
and young herring. 
MovEMENTS OF SALMON IN TIDAL RIVERS 
My experience of the movements of salmon in tidal waters 1s 
almost entirely confined to the Tay. The hay, has a long estuary, 
and the tide flows for a distance of 35 miles. The lower part of the 
river is from 2 to 3 miles broad during high water, and the 
upper part from 100 to 400 yards wide. During winter and spring 
many fish remain a considerable time in the estuary on coming 
from the sea. It is rather strange that an east wind brings the 
fish in towards the shore, while a west wind makes them hasten 
up the river. Mild weather, too, makes them push up the river, 
while snow floods keep them back. When the snow water begins to 
leave the river they come on in large numbers, and during some 
seasons it is only when the floods cease that the fish begin to run, 
although, when the floods are caused by rain, fish will run in high 
water. As the season advances the fish are more inclined to come 
on, and the greater number of them come up the estuary with the 
