av 
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Royal Society at Gottingen. 199 
whieh have long. muzzles, or muzzles covered with long 
whifkers,. .The muzzles of animals are moved in particular 
“by three delicate mufeles; and, befides thefe, feveral folds 
of the cutaneous mufele lie at the fide of the fnout, and 
the branches of the optic nerves proceed in particular to 
thefe mufcles,- I however found in a hedge-hog fome 
fibres of the optic nerve proceed to the root (bulbus) of a 
briftle. For the moft part, however, thefe roots of the long 
whifkers are connected with the numerous and proportion- 
ably ftrong branches of the zervus infraorbitalis, which pro- 
ceed to them in the form of a bundle, and in general tranf- 
ait two fibres to the root of each briftle; which they em- 
brace on both fides. This appearance I found exceedingly 
pretty in the head of a hare newly killed. In animals not 
provided with thefe whifkers, the nerve proceeds only to the 
glandulous fkin of the nofe, and which may be very diftinGly 
obferved in fwine. The whitkers ferve as the vehicle of a finér 
fenfation, in order to forewarn animals in certain cireum- 
ftances of the near approach of danger; for the flighteft 
touching of the fummits of thefe briftles excites in thein a 
very ftrong fenfation. Cats, and other animals which hunt 
for their prey in the night-time, extend the fkin of the 
whifkers, which enables them to afcertain the nature, and 
even ae hardnefs or foftnefs, of the bodies which seis ne 
proach, 
CHEMISTRY, 
» In the fitting of Auguft 4, M. Gmelin communicated to 
the Academy an account of fome. experiments which he 
made on the red lead of Siberia and the white gold ore of 
Fatzebay in Tranfylvania, and the new metals extracted from 
them. He found. it eafy to extract the metal of the former, 
which, on account of the beautiful colour it communicates 
to bodies combined with it, is by Vauquelin called chrome. 
He obtained it of an emerald green colour by means of the 
muriatic acid, and precipitated it from the latter by zinc, the 
Pruffic acid, fulphat of potafh, carbonat of potafh, and cautftic 
"Q4 potafh. 
