696 
Proceedings of the Royal Society 
The results were as follows: — 
Oil 
Dorsal. 
16-66 
Abdominal. 
20-4 
Mean. 
18-53 
Fibre, albumen, ex- 
tractive matter . 
J 20-57 
18-82 
19-70 
Saline matter 
0-88 
0-88 
0-88 
Water 
61-89 
59-90 
60-89 
100-00 
100-00 
10000 
The Kelt of last March was as ugly a specimen of the Salmo 
Salar as I have ever seen. It was 38 inches long, weighed 27 
pounds, and was very lank in the belly, soft in the flesh, much 
lacerated in the dorsal fin and tail, and of a uniform, disagreeable, 
mottled-grey colour over the entire skin. In its structure other- 
wise it was a true male salmon. I subjected it to analysis in the 
same way as the clean fish, with the following results. The ana- 
lysis was made about forty-eight hours after the fish was caught ; 
and in the interval it was shut up in 
a box, so that there could not 
have occurred any appreciable loss by evaporation. 
Dorsal. 
Abdominal . 
Mean. 
Oil ... 
Fibrin, albumen, extrac- j 
1-2 
1 
1-30 
1-25 
tive matter . j 
Saline matter [inferred 
• 16-92 
) 
17-22 
17-07 
from the former ana- j 
lysis] 
l 0-88 
0-88 
8-88 
Water 
81-0 
80-60 
80-80 
100-00 
100-00 
100-00 
Thus it appears — 1. That the nitrogenous solids of a Clean 
salmon, and its oil or fat, constitute together in round numbers 38 
per cent of its flesh ; the remaining 62 per cent being water, with 
a little saline matter (0-9 per cent.). 2. That the fat and the nitro- 
genous constituents are nearly equal to one another. 3. That there 
is decidedly more fat in the “ thin” or abdominal region than in 
