For when we know to a certainty from whom they are descended; when we know that they were, at the time of their transplantation, of the same colour as those from whom they severally sprung; and when, on the other hand, we are credibly informed, that they have changed it for the native colour of the place which they now inhabit; the evidence in support of these facts is as great, as if a person, on the removal of two or three families into another climate, had determined to ascertain the circumstance; as if he had gone with them and watched their children; as if he had communicated his observations at his death to a successor; as if his successor had prosecuted the plan, and thus an uninterrupted chain of evidence had been kept up from their first removal to any determined period of succeeding time.
But though these facts seem sufficient of themselves to confirm our opinion, they are not the only facts which can be adduced in its support.

It can be shewn, that the members of the _very same family_, when divided from each other, and removed into different countries, have not only changed their family complexion, but that they have changed it to _as many different colours_ as they have gone into _different regions of the world_.

We cannot have, perhaps, a more striking instance of this, than in the _Jews_.

These people, are scattered over the face of the whole earth.

They have preserved themselves distinct from the rest of the world by their religion; and, as they never intermarry with any but those of their own sect, so they have no mixture of blood in their veins, that they should differ from each other: and yet nothing is more true, than that the _English Jew_[092] is white, the _Portuguese_ swarthy, the _Armenian_ olive, and the _Arabian_ copper; in short, that there appear to be as many different species of _Jews_, as there are countries in which they reside.
To these facts we shall add the following observation, that if we can give credit to the ancient historians in general, a change from the darkest black to the purest white must have actually been accomplished.
One instance, perhaps, may be thought sufficient.