and a Contagion. 6$ BUT now it may be convenient to add a few Remarks concerning the Tranflation of a Peftilence from an hot Country to a cold one } for according to the different Effects of Heat and Cold, the one atte- nuating and rarefying, the other condenfing and confh'pating, the peftilential Venom is ftrangely altered, infomuch that in a Thing fo obvious, there does not require much to. be faid : Every Thing of this kind pro- digioufly fpreads in hot Climates, as being more fubtile than even the Air it felf^ though the fame in the Northern Countries is more retrained, and confined in Faft-* neffes it cannot efcape from * and from hence the Reaibn is very obvious why there is fo much Difference between the Difeafes of different Climates, which would be too te- dious for us here to go into/ T O come nearer therefore to our Buii- nefs j the fame Affections that in an hot Country heat the Blood and other Juices, fo as in a great Meafure to put them into Fufion, when tranflated into the contrary Extream may give contrary Properties to the fame Fluids, and e contra % and this might be demonftrated by innumerable Expe--
