( 705 1 
Poftfcripr. 
I Had like to have forgotten to advife\ that the EKperimentum 
Cmcis^and fuch others as (ball be made for knowing the nature 
of Colours , be made vtiih Prifms which refract [o much^ a4 to 
make the length of the Image five times its breadth ^ and rather 
more than lefs ; for^ otherwifs Experiments will not fmceed J0 
fkinly with others as they have done with me , 
jin dccotmt of t^o Books : 
h rradatm de VENtRlCULO & mTEStlNlS .mi pr^^ 
mitt it ur alius de PARtlBUS COmiJSrENTlBUS Un ge- 
nere, & in j}ecie de Fartibm ABDOMINIS ; Auth. Franco 
GliffbraOj M. i>. & Cotl.Med.Lond.S^^w, nes nm Suc« Re» 
galis CollegL Londini,i676. in qtsarto» 
THe eminently learned Author of this Anatomical Trea- 
tife, having prefuppofed the general Divifions of the 
parts of an Human Body, taken in their largeft fenfe, and their 
inadequate conceptions, upon the account of which they are 
in divers refpefis called Similar or Organical , proceeds di- 
redlly in this work to the Inferiour and more Pradical divifions 
of the faid Body. 
And having firft of all divided the Lowermoft Venter into 
its Regions, and defigned the parts contained in each of them ; 
he goes on to the divifion of the Cutaneom parts, and confiders 
the nature, ftruflure, origin, vitality, and ufes of the Cuticula 
Cutis vera. Where we cannot but take notice , tbat the 
Author, as well here, as throughout this whole piece, builds 
much upon the grounds, he had laid in the Book, he publiflied 
four years ago, de Vita Naturdd , wJierein he afcribes much to 
Natural Perception^ which he holds to be an Operation anterior 
to, and more general and more fimple than that of, Senfe 3 and 
in which Perception,accompanied withAppetition and Motion, 
he makes Original Life to confij^, which, to him, is nothing elfe 
but the Energetical or Operative nature of any Being fubfifting 
by it felf^not producible by any external power,motion,texture» 
figure^qmpi^atipn or j?tpp9ictipp \pf parts , but by thefble 
' ' ' " Zzzz 2 Firft 
