And all these were mingled with more complex combinations, and with half-imitations, as of the Blue-Bird, so that it seemed almost impossible to doubt that there was some specific meaning, to him and his peers, in this endless vocabulary. Yet other birds, as quick-witted as the Robins, possess but one or two chirping notes, to which they seem unable to give more than the very rudest variation of accent. The controversy between the singing-birds of Europe and America has had various phases and influential disputants. Buffon easily convinced himself that our Thrushes had no songs, because the voices of all birds grew harsh in savage countries, such as he naturally held this continent to be. Audubon, on the other hand, relates that even in his childhood he was assured by his father that the American songsters were the best, though neither Americans nor Europeans could be convinced of it. MacGillivray, the Scottish naturalist, reports that Audubon himself, in conversation, arranged our vocalists in the following order:--first, the Mocking-Bird, as unrivalled; then, the Wood-Thrush, Cat-Bird, and Red Thrush; the Rose-Breasted, Pine, and Blue Grosbeak; the Orchard and Golden Oriole; the Tawny and Hermit Thrushes; several Finches, --Bachmann's, the White-Crowned, the Indigo, and the Nonpareil; and finally, the Bobolink. Among those birds of this list which frequent Massachusetts, Audubon might well put the Wood-Thrush at the head. As I sat the other day in the deep woods beside a black brook which dropped from stone to stone beneath the shadow of our Rattlesnake Rocks, the air seemed at first as silent above me as the earth below. The buzz of summer sounds had not begun. Sometimes a bee hummed by with a long swift thrill like a chord of music; sometimes a breeze came resounding up the forest like an approaching locomotive, and then died utterly away. Then, at length, a Veery's delicious note rose in a fountain of liquid melody from beneath me; and when it was ended, the clear, calm, interrupted chant of the Wood-Thrush fell like solemn water-drops from some source above--I am acquainted with no sound in Nature so sweet, so elevated, so serene. Flutes and flageolets are Art's poor efforts to recall that softer sound. It is simple, and seems all prelude; but the music to which it is the overture must belong to other spheres. It might be the _Angelus_ of some lost convent. It might be the meditation of some maiden-hermit, saying over to herself in solitude, with recurrent tuneful pauses, the only song she knows. Beside this soliloquy of seraphs, the carol of the Veery seems a familiar and almost domestic thing; yet it is so charming that Audubon must have designed to include it among the Thrushes whose merits he proclaims.