3)6 A TREATISE 



* cion alone to be f ufficient to w or ke feniation in us : and not one- 

 Th A ut kjl ty to allow it fufficient, but alfo to profeflc, that not onely this, 

 ' but that no other effec* whatfoevcr can be wrought in us, but 

 motion, and by meanes of motion. Which is evident oat of 

 what we have already delivered, (peaking of bodies in gencrall 5 

 that all tftion among them , either is locall motion,or elfe fol- 

 Icwcth it : and no IdTe evident , out of what we have declared 

 in particular , concerning the operations of the outward fenies, 

 and the objects that worke upon them : and therefore , whoib- 

 ever fhall in this matter , require any thing further then a dif- 

 ference of motion , he muft firtt feeke other inf truments in ob- 

 jc&stocaufeit. For, examining from their very origine, the 

 natures of all the bodies we converfe withall ; we cannot finde 

 any ground to believe they have power or meanes to worke any 

 thing beyond motion. 



But Ifliall crave leave to differ from him, in determining 

 what is the fubje& of this motion , whereby the braine judgeth 

 of the nature of the thing that caufeth it . He will allow no locall 

 change of any tiling in a man , further then certaine vibrations 

 of firings , which he giveth the objects to play upon from the 

 very fenfe up to the braine : and by their different manners of 

 Shaking the Draine,he will have it know, what kind o ' "thing it 1$ 

 that ftriketh the outward fenfe, without removing any thing 

 within our body from one p!ace to another. But I fhall goe the 

 more common way 5 and make the fpirits to be the porters of 

 all newcs to the braine : onely adding thereunto that thele 

 newes which they carry thither, are materiall participations of 

 the bodies, that worke upon the outward organes of the (enfes ; 

 and patting through them,do mingle themfelvcs with the fpirits, 

 and fo doe goe whither they carry them , that is, to the braine ; 

 unto which, r rom all parts of the body, they have immediate re- 

 frt,and a perpetuallcommuncation with it. 



So that, toexercifefenfe (which the Latincs doe ezllftMtir*, 

 but in English we have no one word common to our fevcrail 

 particular notions of divers perceptions by fenfe) is, Our brd*e 

 t* rtttntc ** tmfr*J[i* fitm tkcexttrne tfy& fytluff<r*tic*er 

 mtfatun of *n orgAniceiifvt mttdt fur that fttrf(e t **d frm* 

 ** of tkoftyphicb wt term* an txtcr** fenft j fern wkUJt rwfref- 

 , *f**Bj fawttk fim motim frtfnr r tht tivhf 



