Note 4 — SYNOPSIS OF NORTH AMERICAN BIRDS.

The works of this naturalist (who is Director of the Zoological Museum in Dresden) are in the highest degree important, and in fact indispensable to the ornithologist. In his great work, “The Complete Natural History” (Die Volstandigate Naturgeschichte, Dresden and Leipsic, now in the course of publication in parts), he has undertaken to give plates of all known species of birds, and has already published several thousand figures.