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Fourthly That the Corpufcles of 

 the Menltruum be agile and advan- 

 taged for motion \ (Inch as is fit to 

 disjoyn the parts of the invaded bo- 

 dy ) either by their (hape^ or their 

 minutenefs 3 or their fitnefs to have 

 their aftion befriended by adjuvant 

 Caufes 5 fuch as may be (firfi ) the 

 preiTute of the Atmofphere, which 

 may impell them into the Pores of 

 bodies not fill'd with a Subftance fo 

 refilling as common Air* Aswefee^ 

 that water will by the prevalent 

 preflure of the Ambient , whether 

 Air or Water, be raifed to the height 

 of fome inches in capillary Glades, 

 and in the pores of Spupges, whofe 

 confiftent parts being of eafierceffi- 

 cm than the fides of Glafs-pipes, 

 thofe Pores will be enlarged , and 

 ccnfequently thofe fides disjoyn'd, 

 as appears by the dilatation and 

 fwelling of the Spunge: And ( fer 

 condly ) the agitation, that the in- 

 truding Corpufcles may be fitted ta 

 receive in thofe Pores or Commif- 

 fures by the tranfcurfion of fome 



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