MISCELLANY. 
353 
I. .3485 grs. gave .G18 grs. C0 2 and .2445 grs. H 2 0. 
II. .3625 grs. gave .6365 grs. C0 2 and .2505 grs. H 2 O. 
The relation of the carbon and azote was as 3C : 1A. From these 
results we have then — 
I. 
II. 
Carbon 
49.025 
48.555 
Azote 
18.910 
18.742 
Hydrogen 
7.788 
7.677 
Oxygen 
24.277 
25.026 
100.000 
100.000 
The fact of the existence of the substance operated on in the almonds 
appears to be established by its acting on amygdalin in the same manner 
as the milk of almonds alluded to in the commencement of the paper. 
After numerous trials with various re-agents, its most distinguishing 
character was elicited by the phenomena exhibited when boiled with 
barytes. During the whole of the boiling, which was continued for above 
six hours, ammonia was slowly and continuously disengaged. Through 
the solution a current of carbonic acid gas was passed, and the whole 
filtered ; the clear solution was evaporated to dryness, and the re- 
sidual salt, which contained a large quantity of barytes, possessed a 
strongly bitter taste, — thus leading to the conclusion that emulsin is an 
amide,- and that the salt formed by the action of barytes, is a compound 
of barytes with an acid, which we propose to term emulsic acid. From 
this fact, we are inclined to infer that fibrin, gelatin, casein, &c. are also 
amides,- but the careful examination of these bodies will form the subse- 
quent part of our investigation. — lb. 
On Galactin, by Thomas Thomson, M. D. — This is a substance which 
constitutes the principal ingredient in the sap of the Cow-tree, or 
Galactodendron utile of South America, which is used as a substitute for 
cream. The sap, on standing, throws up a white matter, soluble in boiling 
alcohol, but deposited as that liquid cools. When well washed and 
dried, in vacuo, over sulphuric acid, it constitutes galactin. It is yellow, 
translucent, brittle, has a resinous aspect, and is tasteless. It is insoluble 
in water, but becomes white and soft by imbibing that liquid. It is 
soluble in alcohol and ether. This white compound becomes soft and 
ductile at 60°; at 117° it is still solid, but at 137° it is liquid. Abundance 
of aqueous vapor is driven orT, but the galactin does not become trans- 
lucent and yellow till kept some time at 170°. The specific gravity of 
pure galactin is 0.969, It dissolves readily in oil of turpentine and olive 
oil. It does not combine with potash, nor form a soap, Its constituents 
are — 
