Objervations on Animal Fat, &c. 1? 
between them than between the horfe and the afs, and muft 
be always more fruitful; fo that ifthe horfe were not known 
in his wild ftate, and if characterifing marks of a particular 
fpecies were not vifible in the dfhiggetai, on account of this 
great fimilarity, we might with much more reafon confider 
the dfhiggctai for the wild {tock of our horfe than the younger 
Gmelin confidered the wild horfe as the common ftock of 
the horfe and afs*, which, however, befides the moufe co- 
lour obferved by Gmelin, which is not always uniform, has 
nothing in common with the afs, 
[To be concluded in tle next Number. ] 
—$—————_—————SSS==== 
Il. Obfervations on Animal Fat and the Caufes of Corpuy 
lency. By Dr, Cotnpet. From the Journal de Phy- 
fique, Vendemiaire An. 7. 
Animar fat examined by the microfcope feems to ex- 
hibit yellowith veficles, formed of a very thin and tranfparent 
pellicle, which contain an oily fluid. No pores can be ob- 
feryed in it, and no perfon but Malpighi has been able to 
difcover what are called its adipofe ducts (duétus adipofi). 
In certain cafes, however, fat is abforbed, and in general it 
feems to undergo conftant changes: the fkins of the negroes 
after violent exercife exhale an oily odour. 
The veficles of fat are different in different animals. Wolf 
of Peterfburgh obferved that the fat of a pullet is contained 
in veficles fmaller than thofe of any other animal: thofe of 
the goofe are larger, and ranged with more regularity, The 
next in order are thofe of man; but, according to Wolf, 
‘the moft confiderable are thofe of the hog. Thefe veficles 
are contained in the interftices or {mall fpaces in the cellular 
*Sce Sam. Gort!. Gmelin’s Reife duch Ruffand, parti. p. 47, Come 
pare, alfo, what I have faid of wild horfes in my Travels, part 1. ps 21% 
2725 part ii. p. 642, and partill. p. 509+ : 
_tiffue, 
