TreAttfeef BODIES. Chap. 20. 



into other bodies that refcmble its nature, by heatings and cool- 

 ings : for fo it pafleth in iron barres, which being throughly 

 heated, and then laid to eool north and fouth, are thereby im- 

 bued with a Magnctick virtue; heat opening their bodies, and 

 dif'pofing them to fuck in, fuch atomes as are convenient to 

 their nature, that flow unto them whiles they are cooling. So 

 that we cannot doubt, but that convenient matter fermenting in 

 its warm bed under the earth, becometh a load-ftone by the like 

 fudcing in of affluent ftreams of a like complexion to the former. 



And it fareth in like manner with thofe fiery inftruments(as 

 fireforksj tongues, fhovels, and the like) which do Hand con- 

 ftantly upwards and downwards ; for they, by being often 

 heated and cooled again, do gain a very ftrong verticity,or tur- 

 ning to the Pole : and indeed, they cannot ftand upwards and 

 downwards Co little a while, but that they will in that fhorc 

 fp.?ce gain a manifeft verticity; and change it at every turning. 

 Now lince the force and vigour of this verticity, is in the end 

 that ftandeth downwards; it is evident that tbis effect proceed- 

 eth out of an influence received from the earth. 



And becaufe in a Joad-ftone (made into a globe, or cond- 

 dercd fo, to the end you may reckon hernifphcres in it, as in the 

 great earth ) cither hemifphere giveth unto a needle touched up- 

 on it, not oncly the virtue of that hemifphere where it is touch- 

 ed, but likewife the virtue of the contrary hemifphere; we may 

 boldly conclude,that the virtue which a load-ftonc is impregna- 

 ted with in the wombe or bed of the earth, where it is formed 

 amcf groweth, prooccdeth as well from the contrary hcmifphcre 

 -of the earth, as from that wherein it lyeth; in fuch fort, as we 

 hare abc^e described. And as we feel oftentimes in our own 

 bodies, that fome cold we catch remaineth in us a long while af- 

 ter the taking it, and that fbmetimes it feemeth even to change 

 the nature of fome part of our body into which it is chiefly en- 

 tered, and hath taken particular potieffion of; fo that whenfb- 

 ever new atomes of the like nature, do again range about in the 

 circnrrftant aire, that part fo deeply aflfeed with the former 

 ones of kinne to thcfe? doth in a particular manner fcem to rif- 

 fent them, and to actra$ them to it,and to have its guefts within 

 it ( as it were) wakened and roufed up by the ftrokes of .the :>d- 

 yenicnt ones that knock at their dorcs. Even fo fbut much more 



.flrongly 



