Sentence:  Again some Bodies dissolve both in Fire and Water, as Gums; &c. And these are such, as have both Plenty of Spirit; and their tangible Parts <WSD>indigent</WSD> of Moisture: the former promotes the Dilatation of the Spirits by the Fire and the latter stimulates the Parts to receive the Liquor. 
Meaning of the word marked with <WSD> tags:  Utterly lacking or in need of something specified.