and Creation.

place) several hours before. He furthertells us, That a very sober Gentleman of hisacquaintance, u ho had often occasion toem-Ploy Blood-hounos, allured him , that if aMan had but palled over the Field,the scentWould lye, so as to be perceptible enoughto a good Dog of that fort for several hoursafter. And an ingenious Hunter likewiseallured him, That he had observed, that thescent of a flyirtg and hunted Deer will some-times continue upon the ground from oneday to the next following. He., proceedsfurther, And now we may consider thesethree tlungs ; First, That the substance leftUpon the ground by tire transient tread of aPartridge, Hare or other Animal, that dothbut pals along his way, does probably com-municate to the grafs or ground but some ofthose effluxions that transpire out of his feet,which being small enough to escape the eye,Way probably not amount to one grain inWeight, or perhaps not to the tenth part ofit. Next, That the parts of fluid Bodies,as such, are perpetually in motion, and soare the invisible Particles that swim in them,as may appear by the dissolution of Salt orSugar in Water, and the wandring of aque-ous Vapours through the Air,even when theeye perceives them not. And thirdly, thatthough the Atmosphere ot one of these smallE 4 par-