if the Kidneyes draw the matter of* Vrine unto them out of the 

 Veines, it may be by any of the following three manners , to 

 wit, either by draught, wet,crby fteame. For if the ferous 

 parts that are in the bloud which runneth in theVeines,do toucti 

 fbme dry parts conformable to their nature, tending towards 

 the Kidneyes ; they will infallibly adhere more to thofe dry 

 parts, then to the reft of the bloud. Which if they do info 

 great a quantity, that they reach to other further parts more 

 dry then thefe,they will leave the firft parts to go to the fecond : 

 and thus by lit tie, and little, will draw a line of Vrine from 

 the bloud, if the bloud do abound with it : and the neerer it 

 qommeth to the Kidneyes, theftronger ftill die attraction 

 will be. 



The like will happen, if the fcrofity which is in the bloud, do 

 touch fome part wetted with a like ferofity , or where fuch hath 

 lately parted $ for as we fee that water will run more eafily upon 

 a wet part of aboard or a ft one then upon a dry one ,- foyou 

 cannot doubt, but that if the ferous part , which is mixed with 

 the bloud, do light upon a current of its own nature,it will ft ick 

 more to that, then to the-current of the bloud^and fo part from 

 the bloud, to goe that way which the current of its own nature 

 goeth. 



Befides, it cannot be doubted, but that from the Kidneyes, 

 and from the pafTages between the Kidneys and the Veines , in 

 which the bloud is conveyed, there arifeth a fteame whofe na- 

 ture is, to incorporate it felfc with ferous matter, out of whofe 

 body it hath been extracted. This fteame therefbre,flying ftilj 

 to the ferous bloud which pafTeth by , muft of necedky precipi- 

 tate ( as I may fay ) the ferous parts of that bloud ; or rather 

 muft filter them out of their maine f tcck ; and fo will make 

 them run in that current, from which it felfe doth flow. And 

 thus, you fee how Attrtftieu and Secretttn are made : for th 

 drawing of the ferofity without drawing the bloud, is the part- 

 ing of the Urine from the bloud. And this example,ofthe Kid- 

 neys operation , may be applyed to the attractions of all the o- 

 - t her parts. 



Concerning Now the concocli vc faculty ( which is the laft of the three we 

 conwiUye took together) confifteth of two parts : the one if, as it were a 

 ** drying of the hmnour, whieh is co be conceded ; the other is, 



