Sentence:  The reason of which difference may probably be, that the charring of Vegetables, being an operation quickly perform'd, and whilest the Wood is <WSD>sappy</WSD>, the more solid parts may more easily shrink together, and contract the pores or interstitia between them, then in the rotten Wood, where that natural juice seems onely to be wash'd away by adventitious or unnatural moisturel and so though the natural juice be wasted from between the firm parts, yet those parts are kept asunder by the adventitious moystures, and so by degrees settled in those postures. Derived terms l 
Meaning of the word marked with <WSD> tags:  Spongy; Having spaces in which large quantities of sap can flow.