ExtraSl of a Memoir on Elajlkity. 5 1 



pretation is obvious, becaufe the new inoculation will not 

 fiipply them with patients. 



1 was treated with fome derifion the other and am every 

 day : a perfon faid, that^ as he had inoculated many for the 

 cow-pock, he knew the complaint, and its treatment, better 

 than myfelf. 



I am greatly forry the difeafe above fpoken of is fo well 

 known among the cow-people, as many eminent men will 

 lofe great funis in the year bv the fmall-pox being fuperfeded. 



Q?/fc-rj', Whether Fame, with her babbling tongue, fome fu- 

 ture time, may not convey ruftic vaccine intelligence to fome 

 metropolitan friends, and fo overturn your excellent Inilitu- 

 tion, which, I am informed, is on the tapis* ? 

 Dear Sir, believe me, 



With the greateft deference and refpeft. 



Your moft humble Servant and Pupil, 

 IFinJlow, Bucks. J. TURNER. 



XI . Extrad of a Memoir on Elajlicity. J3>'C.BARRUELt. 



J. HE author of this memoir endeavours to explain the 

 caufe of the elaflicity of bodies by the help of caloric. After 

 laying it down as a principle, that this fluid is eminently 

 elaftic; that it is interpofcd between the integrant molecule 

 of bodies, which is proved by their porofity ; he hopes, from 

 thefe two principles, to deduce confequences leading to this 

 refult. But whatever may be affigned as the caufe of elafti- 

 citv, caloric, at any rate, has a great fliare in the phenomena 

 which it exhibits. 



The different fyftems adopted by philofophers refpefting 

 the caufe of elafticity, are, in the author's opinion, either 

 vague or evidently erroneous. It cannot, he thinks, be 

 afcribed to a repulfivc force, with which the molecula; are 

 endowed, and which increafcs as they approach j for the 



• It' appears, by the vaccine inoculatioo in the country, that medical 

 afliftancc was fcarctly nectffary. 



t From the A-maUs de Chimie, No. 97. 



H 2 exiflen'cc 



