A TREATISE 



qualities, arc as truely bodies, as thole other qualities which we 

 call natural!. 



To this we mayaddc, that the properties of thefe fenfible 

 qualities are fuch as proceed evidently from rarity and denfity ; 

 for (to omit thofe which our touch taketh notice of^as too plain 

 tobccjuefHoned) Phyfitianf judge and determine t ie natura/I 

 qualities of meats, and of medicines , andofhmp'es by their 

 talks and fmels : by thoie ijua iti they fin Je out powers in 

 them to do material! opera t ions , and iucn as our mftruments 

 for cuttingjfiling.brufhiiig.and the like do unto ruder and grof- 

 fer bodies. All which vertues.being in thcie instruments by the 

 different tempers of rarity and denlity , is a convincing argu- 

 nient,that it mufl be the fame caules,whic'i muft produce ef&c'rs 

 of the fame kind in their fmels and tattcs : andasfbrlight^itis 

 known hew corporeally it worketh upon our eyes. 



Againe if we look particu'arly into thecompofitionof the or- 

 ganes ofourfenfes,wenial mtet with nothing but iiich cjualitics 

 as we finde in thecompofition ofall other naturall bodies. If we 

 fearch into our eye , we fliali di'cover in it nothing but diapha- 

 neity, foftnefle , divers colours , and confiftencies ; which all 

 Anatomies, to explicate, do paralleiJ in other bodies: the like is 

 of cur tongue our noiethrils,and our eares. As for our touch ; 

 that is ib materall a fenfc, and fo diifufed over t^e w'iole body, 

 we can have no difFculty about it.Seemg then that ail the qua;i- 

 ties we can discover in riie organes of our fenles^are made by the 

 various minglings of rarity with deBfity,how can we doubt,buc 

 that the aili ve powers over thefe patients , muft be of the fame 

 nature and kind? 



Againe, /edng that examples ahove brought, doe convince, 

 that the objects ofone fenie , may be known by another $ who 

 can doubt of a community among them,if not ofdegrec,at the 

 leaft of the whole kind? As we fee that the touch, is the ground- 

 workeofallthere.fr; and confequently , that being evidently 

 cprporeall and confifting in a rtmper of rarity and denfity, why 

 fliould wema.kedillncuit} ma< lowing the like of the reft ? 



Befides.letuscompoieot rarity and denfky, fuch tempers as, 

 we finde in our fenft's j and let us againe compofe of rarity and 

 denfity , fuch adors ,as we have determined the qualities , which 

 Wccaiilenfiblc, to be; andwilliinotnianifeftly foJloyy, that 



thefe 



