C > 
Ummls zre m Sektii primfits ; which DoSrinej as alio rkt of 
Cold, Colours>&c. I wilh the Honourable Per- 
fon would comprehend in fhortf, as he has ^rhispahaps had been 
done his opinions of the Air, in the plain but tnA'4lt<fo/*w 
«legant ^jf^i/ of SuBio», which hath procured of ihoft Subje&s, about 
many Votaries to his Doflrine. "^}}'^ ^« ^'^^h ddhe/d 
^ ^ divers ffijlorical par- 
iiculars, were not ytt juffichnily kaikidinto, for him to frame pofitive Hjpothefes of 
them. 
And it were to be wifLed, Monf. Le Grand , who pretends fo 
write for the Students of theUniverfuy of Cambridge^ {of v^hlch 
I muft acknowledge my felf an unworthy Member,)wou!d rake in 
}Au BojU's^T^uWiilus, and other Moderns Obfervationsand EX'- 
perimenrs , to illuftrate Monf. Defiartes's DoOrine ; for it never 
was the defign of this Ingenious Perfon , to have his writing Sy- 
ftematical, or think he had given us a Body of Philofophy , as M. 
Le Grand feems to make him ; but rather upon fome few Experi- 
ments he has rais'd a general Hypothefis, which is to be promoted 
or confuted by enfuing Experiments. But our late Author is fo 
far from affuming Modern difcoveries, that in his Natural hiftory, 
fpeakingof the Elatery of comprefsd Air , he feems purpofely to 
have declined (for he could mtht ignorant of fo famous a do- 
flrine,) mentioning the Spring of thefw^/>: Though he lik'd 
l^ot the opinion, at leaft he might have confidered and explicated 
it to inftruft the younger, without bis applaufe orapprobation. 
Lately at Cambridge^ at the difleftion of a lufly Country-Corrj 
I obferv*d two Spleens, iheVefTels of the lefTer, (though there 
was no great difference,) comingoutof ihofeof thegi^ater. The 
Dog was long a dying, and had exceeding flrong Lungs. The 
like may be ufual to the Curious;i though I never read of the like 
Obfervation, 
Aaaa a Some 
