58 REDTENBACHER ON THE COMPOSITION OF STEARIC 
I. 0:305 gr. of this substance gave 0°9235 gr. carbonic acid, 
and 0:3815 gr. water; or in 100 parts, 
US me WP Oy 83°72 
PAVGIOPEN 66 Ss fa eet eae ee 
Mer Gen. ae ne we eee 2°38 
The stearic acid from the manufactory of Dr. Merck gave the 
same substance when distilled with one fourth its weight of lime ; 
the distilled product, after being freed from stearic acid, which 
had passed over undecomposed, by boiling with potass, and pu- 
rified by crystallization from alcohol, had a melting point of 77° 
C, (171° F.). 
II. 0°306 gr. of this substance gave 0°928 gr. carbonic acid, 
and 0°382 gr. water, that is, in 100 parts, 
Carbon ie iat 83°86 
Hydrogen .'. « » 13°87 
Oxygen 2°27 
The same product crystallized from ether afforded the fol- 
lowing results, a new crystallization being effected between each 
combustion, without changing the melting point. 
III. 0°3025 gr.gave0°9125 gr.carbonicacid, and0°377 gr. water. 
IV. 0:3015 0°907 os 0375 as 
I. Il. IIl. Iv. 
Carbon . 83°72 + * 83:86 . . 83°50 . . 8318 
Hydrogen . 13°90 . .13'87 . . 13°85 . . 13°82 
Oxygen 2°38 2:27 2°65 3°00 
It is evident, therefore, how, by purification with ether, the 
per centage of carbon is reduced, leaving, as the second product 
of the distillation of stearic acid, a body having a composition 
similar to that of margarone. 
33 equiv. Carbon . "95994 83°13 per cent. 
33... Hydrogen 411°8 13°57 eee 
Y “Oxygen 100°0 3°30 
3034°2 100°00 
By way of experiment some quite pure stearic acid was di- 
stilled with lime ; the product, after purification with zther, how- 
