i88 



Dr. Robinfbirt Anfwer to Mn Ray. 



SIR, London) June z. — 8^. 



I Thank you for freeing me of my Error concern- 

 ing the burning Fountain near Grenoble. Sonic 

 French^ and other Writers, were the Authors of my 

 Miftake. ' Monfieur Boiffteu (a Native of Dauphine^ 

 and a learned Perfon) fpeaking of the burning Foun^ 

 tain of that Countrey, fays. Aqua e rupe procurrit) 

 & * l pf a frigida^ fed fulphure & bitumine leviter imbuta^ 

 cujus fuperficiei ft fulphuratum admoveris exttrMum ft a* 

 tint accenditur) ardetqy luculenter y ardet & admotd 

 palea^ imprimis coelo nubibus cooperto. To fave his Cre- 

 dit, we may fufpe£t well enough, that he either 

 fpeaks of a different Place from that you were at up 

 the River, orelfe that fome times of the Year Springs 

 may arife near the Bank, where the combuftible 

 Steams may meet with, and run through them, and fo 

 produce the aforefaid Phenomena : But this is only % 

 mere Conje&ure of mine. 



Mr. Kafs Anfwer to Dr. Robinfon. 



S IR) ' ' %§:f[ : ;^ V' ; '' l m 



YOufs of the z d Inftant I received hll Poft. In 

 Anfwer whereto j I approve one of your Ex-* 

 cuies and Salvo's for the Credit of the Authors that 

 have written concerning the burning Fountain) viz. 

 That probably enough in Winter-time there may if- 

 fue Water out of the fame Vent whence the Fire pro- 

 ceeds} for the Time we faw it was in the Height and 

 C\ , ■ • . . . . . * < - • - . Heat 



