The more of that sort of thing the better.

But why not do the other thing, too?
Vattemare made it the mission of his life to induce people of different countries to exchange books, or unneeded duplicates of literature.

We need an Audubon or Wilson, not to make new collections of feathered skeletons, and new volumes on ornithology, but to effect an exchange of living birds between Europe and America; not for caging, not for Zoological gardens and museums, but for singing their free songs in our fields and forests.

There is no doubt that the English lark would thrive and sing as well in America as in this country.

And our bobolink would be as easily acclimatised in Europe.