The limbs of all the vertebrate animals are, in like manner, on one plan, however various they may appear. - Robert Chambers

It appears from this inquiry that color and other physiological characters are of a more superficial and accidental nature than was at one time supposed.

Is our race but the initial of the grand crowning type? Are there yet to be species superior to us in organization, purer in feeling, more powerful in device and act, and who shall take a rule over us! There is in this nothing improbable on other grounds. The present race, rude and impulsive as it is, is perhaps the best adapted to the present state of things in the world; but the external world goes through slow and gradual changes, which may leave it in time a much serener field of existence. There may then be occasion for a nobler type of humanity, which shall complete the zoological circle on this planet, and realize some of the dreams of the purest spirits of the present race.

Meteoric stones have proved to be a verity, and not an impossibility. About the same time, the fact of so many Gloucestershire peasantry having attested the prevention of small-pox by a virus from the teats of a cow, would have been deemed a sufficient answer to the same pleading, by nine out of every ten of the best educated physicians in England. Jenner's statue in Trafalgar Square tells us how fallacious the objection would have been. It is to be observed regarding such objections, that they are almost invariably gratuitous and unproved. Were they always put to the test of experiment, how many might prove like meteorites and vaccination?