Sentence:  The <WSD>onager</WSD>, or wild aſs, is ſeen in ſtill greater abundance than the wild horſe; and the peculiarities of its kind are more diſtinctly marked than in thoſe of the tame one. 
Meaning of the word marked with <WSD> tags:  The Asiatic wild ass or hemione ("Equus hemionus"), an animal of the horse family native to Asia; specifically, the (Persian onager), (Persian wild ass), or (Persian zebra) ("(Equus hemionus onager)").