CENTURY IX. 87 



spirit of the body, or common air. The sixth is the 

 nature of the native spirits in the .body, whether they 

 be active and eager, or dull and gentle. The seventh 

 is the emission or detention of the spirits in bodies. 

 The eighth is the dilatation, or contraction of the spirits 

 in bodies, while they are detained. The ninth is the 

 collocation of the spirits in bodies ; whether the collo 

 cation be equal or unequal ; and again, whether the 

 spirits be coacervate or diffused. The tenth is the 

 density or rarity of the tangible parts. The eleventh 

 is the equality or inequality of the tangible parts. The 

 twelfth is the digestion or crudity of the tangible parts. 

 The thirteenth is the nature of the matter, whether 

 sulphureous or mercurial, watery or oily, dry and 

 terrestrial, or moist and liquid; which natures of sul 

 phureous and mercurial, seem to be natures radical and 

 principal. The fourteenth is the placing of the tan 

 gible parts in length, or transverse (as it is in the warp 

 and the woof of textiles) ; more inward 1 or more out 

 ward, &c. The fifteenth is the porosity or imporosity 

 betwixt the tangible parts, and the greatness or small- 

 ness of the pores. The sixteenth is the collocation and 

 posture of the pores. There may be more causes ; but 

 these do occur for the present. 



Experiment solitary touching induration by sympathy. 



847. Take lead and melt it, and in the midst of it, 

 when it beginneth to congeal, make a little dint or 

 hole, and put quicksilver wrapped in a piece of linen 

 into that hole, and the quicksilver will fix, and run 

 no more, and endure the hammer. This is a noble 

 instance of induration, by consent of one body with 

 another, and motion of excitation to imitate ; for to 



