156 Scientific. Intelligence. [Ave. 
XII. Nature of Fatty Bodies 9) > 390%. 
M. Henri Braconnot has lately made a curious set of experiments 
upon the fatty bodies, both animal and vegetable. .He has shown 
that they all consist of two distinct substances: 1. A liquid oil: 
2. A solid substance, analogous to wax or tallow in its appearance 
and properties. He separated these two bodies from each other by 
a mechanical contrivance. The oil is imbibed by paper, but not 
the wax. He therefore compressed the fatty body in the midst of a 
sufficient quantity of paper. The oil was absorbed, while the wax 
remained in a state of purity. Then by steeping the paper in hot 
water, the oil separated from it, and swam upon the surface of the 
liquid. ‘The wax or tallow thus obtained from all the fatty bodies 
closely resembles myrtle wax in its properties. If the fatty body be 
liquid, it is necessary to congeal it, by exposure to cold, before sub- 
jecting it to pressure. 
The following are the results which Braconnot obtained from 
different fatty bodies. 
Vosges butter in summer is composed of 
te. te ee eS eevee eseeeoes pee 60 
Tallow eeeveoe ee teen oe e@ooeeeoeerersr eevee 40 
But in winter its composition was ic 
eRe a? OR SSI I ce ie AR ee eae 35 
alloge: seat e ties a. ele LEO) Se 65 
100 - 
Hog’s lard was composed of 
hI ied i alee tb ah tepk ha SE vote hs 62 
TAO ons patiia's' 8s nian ree suspeie le Spiele ste wa ae 
100 
Ox marrow, of 
PONOME, cad Fc ah oa pik eke ane Cas Ghee 
Se eee ea oe eee8e eG@eemeresvesves ee 24 
¥ 100 
* Marrow of sheep, of 
AUR en aa ih wala cies ha ua area 26 
RAYON na data ta canta « « aitaks - end aietiete 74 
sel ns 100 
Goose fat, of 
UCU as 9k ie-e 90's cis aepihds na Cake 
ES ohana ele ina nao chmitetee 32 
100 
‘ 
C—O ee 
