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Formation of Animals

Nor seems it necessary, or rational, that the first seed of every creature should formally include all those seeds that should be afterwards produced from it; since it is, we think, sufficient that it should potentially include them, just as Abraham did Levi; or as one kernel does all those indeterminate kernels that may be thence afterwards raised; the first seeds being doubtless of the same nature with those that now exist, after so many thousand years, the order of time making only an accidental difference; which if we do not grant, we must run into this absurdity, that every thing does not produce its like, a bird a bird, or a horse a horse, which would be to fill all the world with monsters, which nature does so much abhor.

But every vegetable seed, or kernel, for example, does now actually and formally contain all the seeds or kernels which may be at any time afterwards produced from them. A kernel has indeed, as we have found by microscopes, a pretty fair and distinct delineation of the tree and branches into which it may be afterwards formed by the fermentation of its parts, and addition of suitable matter; as in the tree are potentially contained all the thousands and millions of kernels, and so of trees, that shall or may be thence raised afterwards: and some are apt to believe it must be similar in the first animals; whereas the finest glasses, which are brought to an almost incredible perfection, cannot discover actual seeds in seeds, or kernels in kernels; though, if there were any such thing as an actual least atom, they might, one would think, be discovered by them, since they have shewn us not only seeds, but even new animals, in many parts of matter where we never suspected them, and even in some of the smallest animals themselves, whereof our naked sight can take no cognizance. As for the parts of matter, be they how they will, finite or infinite, it makes no great alteration; for, if these parts are not all seminal, we are no nearer. Nay, at best, an absurdity seems to be the consequence of this hypothesis; because, if those parts are infinite, and include all successive generations of animals, it would follow that the number of animals too should be infinite; and, instead of one, we should have a thousand infinites; and it would be strange too if they should not, some of them, be greater or less than one another. For that pleasant fancy, that all the seeds of animals were distinctly created at the beginning of time and things, that they are mingled with all the elements, that we take them in with our food, and the he and she atoms either fly off or stay, as they like their lodgings; we hope there is no need of being serious to confute it. And we may ask of this, as well as the former hypothesis, what need of them, when the work may be done without them? The kernel, as before, contains tho