144 NATURAL HISTORY. 



been said ; the falling of them in round drops, which 

 is the form of union, and the staying of them for a 

 little time in bubbles and froth. In the second de 

 gree or kind, this appetite is strong ; as in iron, in 

 stone, in wood, &c. In the third, this appetite is in a 

 medium between the other two : for such bodies do 

 partly follow the touch of another body, and partly 

 stick and continue to themselves ; and therefore 

 they rope, and draw themselves in threads, as we see 

 in pitch, glue, birdlime, &c. But note, that all solid 

 bodies are cleaving more or less : and that they love 

 better the touch of somewhat that is tangible, than 

 of air. For water in small quantity cleaveth to any 

 thing that is solid ; and so would metal too, if the 

 weight drew it not off. And therefore gold foliate, 

 or any metal foliate cleaveth : but those bodies which 

 are noted to be clammy and cleaving, are such as 

 have a more indifferent appetite at once to follow 

 another body, and to hold to themselves. And 

 therefore they are commonly bodies ill mixed ; and 

 which take more pleasure in a foreign body, than in 

 preserving their own consistence, and which have 

 little predominance in drought or moisture. 



Experiment solitary touching the, like operations of heat 

 and time. 



294. Time and heat are fellows in many effects. 

 Heat drieth bodies that do easily expire ; as parch 

 ment, leaves, roots, clay, &c. And so doth time or 

 age arefy ; as in the same bodies, &c. Heat dis- 

 solveth and melteth bodies that keep in their spirits ; 



