E. Uricoechea’s Chemical Examinations. 245 
rated, I examined, however, only that one which was combined 
with the magnesia, the lead salt being left, for want of time, for 
a future examiuation. 
The magnesia salt which fell from the alcoholic solution was 
decomposed by hydrochloric acid, and the fatty acid after being 
crystallized two or three times from its alcoholic solution had 
a constant melting point at 53°. Playfair gave as the melting 
point of myristic acid 49°, but Heintz in his masterly examination 
of the spermaceti* obtained for the melting point of this aci 
53°8, with which, my own observation, made before Heintz’s 
article was published, agrees very well. 
o be sure of the identity, an elementary analysis was made. 
04275 gram. of substance gave 1-152 gr. of carbonic acid 
and 0:4750 gr. of water, or 
At. Calculated. Found. 
Carbon, - “ ae | 73°68 73°50 
Hydrogen, - i a ae 12:28 12°34 
Oxygen, - - . 4 14-04 14:16 
100-00 100:00 
The analysis.as we see, agrees exactly with the formula C2* 
H?*Q* which Playfair gave for myristic acid, and which Heintz 
has recently confirmed. . 
In the first and sometimes in the second of the partial precipi- 
tations another substance is found which I have named Oxosite 
(Oloba and Bhy, ) ; Y 
It is less soluble in alcohol than myristic acid, but more readily 
soln ether; these particulars, and its crystallizing out first from 
4 mixed solution are properties by which a separation from my- 
nistic acid is easily effected. 
It crystallizes in beantiful (square ?) prisms, colorless, transpa- 
tent, and with a strong vitreous Instre. Melts at 133°; on cool- 
ing a few degrees, it solidifies to a crystalline mass ; and on heat- 
‘ng again the melting point remains the same. ‘This reaction is 
80 very different from that of Olivile, that it suggested at once the 
Supposition that this was a new Ae 
Two elementary analysis were made in order to test this con- 
clusion ; 
1. 02804 gr. of Olobile gave 0-7524 of carbonic acid and 
01603 of water. i 
- 01793 gr. of Olobile gave 0°4801 of carbonic acid and 
0°1027 of water, or 
I, Bae 
Carbon, ». = - 43:19 72°86 
Hydrogen FA a - - 6-35 oo 
Oxygen, - ¥ ci i - 2046 
100-00 100°00 
# 
* Pogg. Ann, vol. xcii, p. 441. 
