1 8 Of the Caufe of a feftiknce, ther between the Sun's Rays, and thefe faline Exhalations, by a Kind of Magnetifm between them, is too obvious in a Multi- tude of Instances to want any Comment. I know in nothing indeed where there is a greater Intercourfe and Sympathy: and a considerable Illuftration of it may be made by the following Experi- ment. If any one in the Spring-time, when the Sun is approaching nearer to us, digs up a Piece of Earth, and after In- fufion and Filtration, evaporates the Li- quor, he will find at the Bottom of the VefTel a Sixth Part of Salt more than at any other Time of the Year, from the fame Quantity of Earth managed after the fame Manner ^ the nitrous Salt for many Reafons not arifing in fb great a Quantity for the Exigencies of Nature, at any other Times * whence I conceive it manifestly to prove, that there is fuch an Efflux of this Salt as before fuggefted, and a Kind of Subli- mation of it into the Air, and that this faline Spirit hath a Sort of Sympathy with the fuperior Heat. But that we may not life more Arguments than are neceffary to prove the Energy of this Principle, every one who is doubtful herein may obferve, that
