AMIDES OF THE FATTY ACIDS. 307 
I Il. Il. IV. Mean. 
Carbon, . 76-74 76-65 a B 76-70 
Hydrogen, . 12°94 12°89 eh sop 12-92 
Nitrogen, 3 But 5A 5-02 4°85 4:94 
Cod-Liver Oil. 
Cod-liver oil requires to be digested for a considerable time with ammonia 
before it is acted upon. It does not yield very much amide, but a considerable 
quantity of an oily and resinous matter is obtained from the mother liquor. It 
is very soluble in alcohol, and when dry presents similar appearances to the 
amides previously described; but its analysis gives results which at present I 
cannot explain, and on that account I have not given it either a name or formula. 
It fuses at 93° C., and becomes solid and transparent at 91° C. 
The following are the numbers obtained :— 
-5960  ... of carbonic acid, and 
2150 grammes of substance gave 
I. 
2534 ... of water. 
2114 grammes of substance gave 
‘5875 ... of carbonic acid, and 
2465 ... of water. 
II 
ll ‘4740 grammes of substance gave 
“{:0205 ... — of nitrogen. 
‘4360 grammes of substance gave 
Me 0193 =... _~— of nitrogen. 
Vv -3305 grammes of substance gave 
0142 ~~... _ of nitrogen. 
I. II. lil. IV. Ve Mean. 
Carbon, . 75:60 75°79 on fe ae 76°70 
Hydrogen, . 13°03 12:95 aoe side i 12-99 
Nitrogen, . 5 ee 4°32 4:42 4:29 : 4:34 
On comparing these results with those obtained from the other amides, it will 
_be seen that the carbon and hydrogen would correspond with the formula for 
g margaramide, but the nitrogen is nearly one per cent. too low; the fusing point 
is also much lower than that of this amide. It likewise remains transparent 
when cold, which is a property belonging to oleamide, whilst the margaramide 
becomes opaque and somewhat crystalline when cold. It is my intention to 
make another examination of this oil, in order to ascertain the cause of these 
unsatisfactory results. 
As it is my intention to continue this investigation, and also to examine the 
products of decomposition of these amides, I shall at present confine myself to a 
few remarks. 
From the results of the analyses it appears that linseed, poppy, and croton 
oils yield margaramide, whilst oleamide is obtained from almond and ‘seal oils; 
and, according to M. Bouts’ experiments, ricinolamide is obtained from castor 
VOL. XXI. PART Il. 4N 
