‘Miscellaneous. Facts in Zoology. -309 
Asplenium. Te 
1. Ebeneum, Willd. Rocks, July. 
2. Melanocaulon, Wille. On the sides of rocks, July. 
Pteris. olen 
Aquilina, L. In woods, July. 
Adiantum. 
Pedatum, L. Wet places, July. 
Dicksonia. z 
Pilosiuscula, Willd. Wet woods, Aug. 
ZOOLOGY. 
iia tae 
Ant. VIII.— Fragments relating to the history of Animals. 
Extract ofa letter ihe Baierodated 3 | 
Princeton, Dec. 22d, 1821. 
Dear Sip, 
Tue following are the extracts from my notes on Natural 
History, mentioned in my last to you. You have my 
consent to dispose of them as you think-proper. My en- 
gagements would not permit me to copy them before. 
Yours truly, 
JACOB GREEN. 
Curious Instinct of the common Hog, (Sus Scrofa—Lin.) 
It is customary with farmers who reside in the thinly.set- 
tled tracts of the United States to suffer their hogs to run at 
large. These animals feed upon acrons which are very 
abundant in our extensive forests, and in this situation they 
often become wildand ferocious. A gentleman of my acquaint- 
ance, while travelling, some years ago, through the wilds of 
Vermont, perceived ata little distance before him a herd of 
swine, and his attention was arrested by the agitation they 
exhibited. He quickly perceived a number of young pigs 
in the centre of the herd, and that the hogs were arranged 
about them in a conical figure, having their heads all.turned 
outwards. At the apex of: thisesingular cone, a huge boar 
Vou TY... Nov 2. 14 
