J0 OF THE WATERS. 



currents*; another to fubtcrraneous refcrvoirs t J fometorain 

 and fnow $ ; others to the Vapours of the fca, rain, and mow. 

 This laft fyftcm is moft generally received, on the evidence 

 the great Dr. Halley, Mr. Ray, and Dr. Plott |. 



The confideration of the difficulties attending both this and 

 the other fyftems, undoubtedly led the learned Stukeley to fpeak 

 of this fubjedt with the piety and modefty of the divine Mantuan. 

 He fpcaks of it, when he has the healing fountain of Bu* 

 before him, as a fecret flill impenetrable by any human genius. 



I obferve, fays he, that the whole country hereabouts is a 

 rock of good lime-ftone, which is the minera of the water's heat 

 and virtue ; but how that comes to be calcined ; by what refined 

 chymiflry of nature fulphur and ftecl is mixed with it ; by what 

 means it acquires and conferves with fo much conftancy this 

 equable and mighty focus, together with the reafon of foun- 

 tains in general : I profefs, in my fentiments, is one of 

 arcana in philofophy hitherto infcrutable ||." 



I do not think that any one county in this ifland can boaft of 

 finer rivers and brooks than this. The Tync, the Blytb, the Wanf- 



* Gualnm; Refleflioni Copra 1' Origine delle Fontane, defcritte in Forma di Lettera, &c. 

 Lucca, 1725, 8vo. 

 f Des Cartes. 



t Falifmeri, M. D. di Padua. 

 Monf. Pit. Perrauit, de 1' Academic Fran ? oife, Oeuvres de Pbyfique, &c. Amft. 



2 vol. 410. 



Jf. Vo/tus de Nili et aliorum Fluminum Origine. 

 Bartholln. de Font. Fluv. Orig. Amft. izmo. 1697. 



4. Dr. Halley, Ph. Tr. No. 192. 

 Ray's Wifdom of God on the Creation, 8vo. p. 81. 

 Dr. Plott, de Orig. Font. &c. 8vo. Oxon. 1685. 

 Itin. curios. 



