RESULTS OF SALMON MARKING 85 
In the former the increase is 4, in the latter 6 ]b., 
and in each case the interval is thirteen months. 
Another record is from the Tay, but as the fish 
was found dead, and the weight merely estimated, 
the result—an increase of 3 lb. in exactly two years 
—is not so valuable as otherwise would have been 
the case. So far as it goes, however, the record 
corresponds with the slight increase seen in the Brora 
fish mentioned. The last record which I can mention 
from Scotland is rather remarkable, since in a year 
all but ten days the fish is reported as having 
gained only 4 lb. in weight and nothing in length :— 
7355 fe lb. 38” Kelt Fem. Mar. 15, 1902 Loch Brora 
134 ,, 38” Kelt Fem. Mar. 5,1903 Loch Brora 
All these fish are clearly annual spawners, and 
since long period migrants are, in Scotland, in the 
majority and remain in the sea, their recapture in 
the kelt condition is less likely to occur. The small 
increase even in annual spawners is sufficiently re- 
markable. There are no available records from 
Ireland or England. 
With regard to the manner in which kelts 
descend to the sea, and more especially the time 
they occupy in such descent, it may be useful 
first to recall the experiences of a former super- 
intendent of Tweed bailiffs, as stated at p. 66 of 
the Tweed Reports, 1866. Mitchell relates that in 
1854 he marked in the Whitadder 206 bull-trout 
kelts and took them down to the tideway at or near 
Berwick Bridge. ‘Few, if any, of these went down 
to the sea, as for many weeks after they were 
