Sentence:  It cannot be denied it [the chameleon] is (if not the moſt of any) a very <WSD>abſtemious</WSD> animall, and ſuch as by reaſon of its frigidity, paucity of bloud, and latitancy in the winter (about which time the obſervations are often made) will long ſubſist without a viſible ſuſtentation. 
Meaning of the word marked with <WSD> tags:  Refraining from freely consuming food or strong drink; sparing in diet; abstinent, temperate. (From early 17th c.)