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poles some of the Greater Animals , and the Least of These, and Plants, arelupplyed from Equivocal Generation ; that Corrupted Matter front theWarmtb of the Air, or the Motioni of its Own Principies, can Form theParts of the One or the Other. For the Heat of the Air endeavours toDiffipate and Remove - the Thinner Parts from the more Gross , since noMembrane is sopposcd to Confine them: And the more ABive Principies arefrom their Own Nature always strugling to be quit of them : And this Way,the Parts of an Animal would be sooner Broken into pieces, than a New oneGenerated.

But they believe it may allowed, that the Least and most InconsiderablcAnimals and; Plants, are this way Formed. But their Minutenefs makesthe Difficulty Greater: A Membrane to include the Conception with its >

First Nourishment seems more Neceffary Here, where the Parts are moreDelicately put together, and from their exceeding Fineness mightmore Easily Mifcarry. But if aster this Method some Animals andPlants can be Produc d, why is the fame Species and these very Individualsthey fiippose fo made, surnish’d with Organs for Univocal Generation ? IfSlime and Mud can afford Frogs and E eis, why does the first Spawn so manyEggs , and are the other Fiviparous? Why does not fo great a Diversity ofPutrid Parts in the Earth, Dinerently Affected by unaccountable Accidents,osten present us with New LivingCreatures, and Vegetables ot PeculiarSpecies ? But no soch New Plants are taken Notice of; and the Mites areof the fame sort from Cbeefi and from Meal. The Objection which isoffered against Epicurus, will be made with the fame Force against This O-pinion : If the Earth at First Efiivocally Produc’d Men, Quadrupeds, Birds ,and Fißi, why has it not done it very frequently or at least some Times since ?

We begin to Sufpect the Cheat, when the Artist is not Able to Perform thefame Again.

CXXV. i. Upon comparing the Observations and Discoveries of Dr. TS« Modem. Harvey, S. Malpighi, Dr. deGraaf and M. Leewenhoeck, with one another, Theory ®/Ge-these Three things feem to me very Probable, i. That Animals are ex Ani - Leo. QLr-ien?'''malculo. 2. That the Animalcles are Originally in Semine Marium & non n > >§r. p. 474.in Faminis. 3. That they can never come Forward nor be Formed into A-nimals of the respective Kind, without the Ova in Faminis.

The First of these seems Probable from these 3 Observations; 1. That somesoch thing has been so osten observed by Malpighius in the Cicatricula ofan Egg Before Incubation, as the Rudiments of an Animal in the Shape ofa Tadpole ; as may be feen in his First, and in his Repeated Observationsde Fbrmatione Pulli in Ovo. 2. The sodden Appearance and Display ing ofali the Parts, aster Incubation, makes it probable, that they are not thenActually Formed out of a Fluid, but that the Stamina of them have beenformerly there Existent, and are now Expanded. The First Part of the Chickwhich is Diseovered with the Naked Eye is, you know, the PunBuni Saliens ,and that not till Three Days and Nights of Incubation be past: and then

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