Chemistry and Physics. 133 
tions of the two species differ with the source of the alcohol. The oil 
which is obtained from beet-juice contains one-third of the active and 
two-thirds of the passive alcohol; that from molasses contains about 
equal proportions of both. As the two have the same boiling point or 
of sulphamylate of baryta from the raw oil. The crystals do not differ 
in form or in chemical constitution, but one portion is about two and a 
h half times more soluble than the other. The more soluble portion con- 
. Separation of the two baryta salts may be effected by taking advantage 
i of the difference in their solubility and recrystallizing them 15-20 
" « 
The active salt is concentrated in the mother liquor. It is very 
remarkable that the two salts are perfectly isomorphous, and that it is 
only the difference in their solubility which enables us to separate them. 
2etween the two alcohols there is a slight difference in density, the ac- 
ty oil being about ;3,5th heavier than the other.—Comptes Rend 
De al ae lal 
. 
" W. G. 
1. Ultimate Analysis of certain pure Animal Oils; by J. H. 
ALEXANDER and CampsBett Morrit. 
: Sp. Gr. at 64°95 F. Carbon. dri Oxygen. 
Winter sperm oil, 087971 - 0:76490 - 012150 - 0°11360 
Lard oil, 091546 - 0-76658 - 0:10586 - 012756 
Whale oil, 0:92000 - 0:77511 - 0-11430 - 0-11059 
Tn mixing these oils, and probably all animal oils, no change of vol- f 
“ ume occurs. The following are the specific gravities observed al Soe 
calculated for a temperature of 65°-25 F. of equal volumes respectively 
mixed as under a 
. Mixed Oils. . Gravity observed. Sp. Gr. calculated. 
- Winter sperm -}- lard, Aa 0-89736 089735 f 
: “% “ec + whale, 089905 089962 : oe 
Lard + whale, 0-91778 091750" 
ult of such a calculation for the carbon in each of the above: viz., 
SpermO.  _. Lard O. Whale 0. 
Carbon calculated, 076118 - 078367 - 0°75854 
do. found. 0-7 
epee - 076658 - 077511 
_ The differences here between lation and experiment, amount- 
Je: of the same oil. These variations may, 
lly as covering the whole margin indicated 
ore, Dec. 1, 1855. 
