(28?) 
unintelligible ; and examin'd the opinions of Gajfendi and Homra- 
to Fakio? the nature of the fame; he doth, at length, confonant- 
ly to the Cmejim principle, place the Life of Animals in the con- 
tinued motion of the Blood. And then having explain'd, where- 
in the nature of K;?w/^'^i^^ properly confifls, and fliew*d, that 
all true knowledge includes Confcience, he comes to the refuir ^ 
That the Soul of Brutes, whatever it be fancied to be, is deftitute 
of knowledge, ftridly fo calTd • and that Matter is incapable of 
perception; as alfo that Cogitation cannot be truly affirm'd of 
Extenfion, neither as an EfTential part, nor as a propriety, nor 
as a mode thereof: Refuting Mr. Hebbes , that undertakes 
to maintain, Cogitation to be a corporeal motion^ and like- 
wife lliewing againft Gajendi^ that 'tis repugnant, Senfefliould 
arife from unfenfible things* 
This done, he fliews, that God can make Engins that fhall imi<* 
tate the aftions of Brutes ; where he compares a living Dogg with 
zn J^utmatum^ made by Art; and withal difcovers the error of 
thofe, who from the external form of the parts in Brutes judge 
them to have knowledge like Men ; Chewing at the fame time the 
difference between Manand Brutes 5 which he places chiefly in 
two particulars : One is, that Br^es are not endowed with the fa- 
culty of fpeaking, fo as by figns to manifeft their thoughts, and 
toanfwerappofulytofachthingsasare asked of them. The 0- 
ther is, that, though the motions of fuch Engins be regulared^and 
exceed, in certainty, the motions even of the wifeftmen5 yet they 
come fhort of Man, in many of thofe things in which they fliould 
imitate him moft. 
Here our Author enlarges his difcourfe by reprefentrng,fte all 
Morions in Brutes may be explain'd by a Mechanical principle^ 
tBathy a meer mechanical operation the Blood is carried about the 
whole body ; that:, as the Life of an Anlma!, Tot he Conccd'ionof 
the food depend eth only from a corporeal principle, as alfo San- 
guification, Nutrition, Refpiraticn ; and that Mufcular motion is 
made by means of the Animal fpirits 5 the force of which he ex- 
plains; and alfo, from whence they have that great power,whereby 
they move the whole body. 
Having difpatch't fo far, he endeavors to make it our, from 
whence that great diverfity of motions arifeth in Animals, if they 
have no Sou! : where he proveth, that even in Ma^ there are many 
motionf^ 
