886 Miscellanies. 
They examined the composition of fibrin, albumine, and ¢ 
matter derived from mammiferous animals, both eden: and ¢ car- 
nivorous and found it identical in each variety. 
Tn reference to the third assumption—the creation of azote ay vital 
action—the authors, after mentioning the experiments of Vauquelin 
and Majendie, inform us that they endeavored to feed a sheep upon 
sugar and gum, substances which contain no azote. The animal, al- 
though vigorous at first, grew meagre under this regimen, and died 
under the twentieth day of the experiment having diminished in 
in weight from fifty two to thirty one pounds. Its death and impov- 
erishment were fairly attributed to the absence of azote in its food. 
The results of the whole investigation are thus enumerated = 
1. The identity of elementary chemical composition, particularly 
as it — azote in the _— of herbivorous oy. a 
mamm 2 
ifera. 
2. That setociel ae contains as aunt i azote and faim weiter - 
venous blood. 
~- 3. That the blood of herbivorous and carnivorous animals is of 
the same composition, as well as the various eteeet: ete are wee 
creted from it. 
4, That in equal eben of the two fluids ie a? dep, the blood 
of mammifera, whatever the mode of nourishment, has a 
than the chyle.. 
5. That the excrements of carnivorous contain more ie e than 
those of herbivorous animals. 
6. That herbivorots animals cannot any more than carnivorous, 
be supported by food containing no azote. 
7. That unless we admit that vital action may aS azote, we must 
conclude that that which the chyle contains proceeds from the food, 
and that in both the classes of animals examined, farnishes 
the complement of that which is found in the blood.—Bib- Univ. 
Abril, 1832. -e geoe 
oe “ore a : ‘A 
pet isha piidenAdipiniad coped so as is tated Take two parts 
ahi powder, precipitated from a nitric solution by a solution of 
common salt—one part of alum, and two parts of cream of tartar3 
make them into a paste with a little water, and after cleaning the cop- 
ad thoroughly, rub this paste upon it with the finger covered” witht 
white leather or very fine muslin; when the piece’ is sufficiently 
whitened, polish it with a buff powdered with calcined hartshorn, of 
a little Spanish white ; red copper takes the finest polish. 
