Sentence:  The <WSD>moccaſin</WSD> ſnake is a large and horrid ſerpent to all appearance, and there are very terrifying ſtories related of him by the inhabitants of the Southern ſtates, where they greatly abound, particularly in Eaſt Florida: that their bite is always incurable, the fleſh for a conſiderable ſpace about the wound rotting to the bone, which then becomes carious, and a general mortification enſues, which infallibly deſtroys the patient; ... 
Meaning of the word marked with <WSD> tags:  Any of several North American snakes of the genus "Agkistrodon", "particularly" the copperhead ("Agkistrodon contortrix") and the cottonmouth or water moccasin ("Agkistrodon piscivorus").