( 32 ) from what has been faid before, it is not hard to conjecture the Reafon. In a Mountain call’d Pacccava, a League from the Mines of Verenguela de Pajages, there be Springs of this Liquor, the Colour whereof is whitilh, inclining to yellow, that as it runs along condenfes into very hard and weighty Stone of different Shapes. Moreover any po rous Subftance that can fuck this kind of Li quor into it, is apt to be turn’d into Stone; and of thofe I have feen Trees, and Limbs and Bones of Beafts turn’d into hard Stone. Jn the City de Plata I have feen Sticks of Wood taken out ofthat great|Riverof the fame Name ; fo much of which as had remain’d cover’d with the Water, being converted into very fine Stone. I faw alfo the Teeth and ■ Bones of Giants, that were dug up in Tarija, I turn’d into heavy and hard Stone. j Stones have their fubftantial Forms, which ■ makes them differ fpecifically; yet, becaufe we cannot come to the Knowledge of them in our Definitions, we are fain, by way of Peri- phrafis, to make ufe of Accidents and Pro perties. Every feveral form of the Stones is accompany’d with particular Virtues, as re markable as thofe of Animals or Plants, and proportion’d to the length of Time Nature takes in it’s Generation ; but becaufe Plants and Animals are to have fo different Difpofi- tions,' and to produce fuch various and admi rable EffeCts, they cannot be of fo uniform, and Well mingl’d a Temperament as the Stones are, nor is their foft and gentle Subftance capable to endure fo much Force ; as neither is the Hardnefs of the Stones fitted for the producing