376 Transactions. 
Far. 
The ethereal extract of the dry-fish powder was used, since that is 
usually reckoned as fat in the analysis of foodstuffs. The following values 
ined 
were obtained :— 
TABLE I. 
Fish, or ag ma nat Remarks. 
Kingfish (haku; | 1| 8-796 calories.. | Fat extracted from dried-fish powder. 
Seriola lalandii) | 8-822 
8-805 (average) 
КУ зиш ве с 
Groper (hapuku ; 5 | 8-670 (eae 
Oligorus gigas) 8-678 
8-674 (average) 
Groper cme: оа M езана оно alcohol-dried fish, low 
9-045 temperature ; old. 
9-052 (average) 
Groper E I зе CONS YER 
UNSAPONIFIABLE MATTER. 
When the ethereal extract of fish is saponified with alcoholic potash, 
a certain amount of fatty material, soluble in ether, remains unattacked. 
This consists of cholesterols and other alcohols which replace the glycerol 
e: the ordinary fats. We have reason to believe that little, if any, of 
arrive at the true or utilizable fuel-value of the 
ethereal extract. In the specimen of groper-fat X in Table I the caloric 
value of the unsaponifiable material was found 10-4 calories. In 
total fuel-value of the fat was 9-05 calories the true value was only 8-01. 
These two considerations—viz., depreciated value on heating and drying, 
and the presence of a relatively large amount of unsaponifiable matter— 
both tend to reduce the standard figure (9-1) for caloric value of fat. 
When applied to fish-fats our estimations indicate a net value not above 
8:0 calories pe gramme. 
ExTRACTIVES. 
= a weak alcoholic extract of the dried-fish powder we obtained a 
Caloric value of 5-3 per gramme. The figure usually given for caloric 
