Note 2 — INTRODUCTION.
Reading edition
Dr. Coues, in his “Key to North American Birds,” gives an able and extended article on the general characteristics of birds, and on their internal and external anatomy, to which we refer our readers. A paper by Professor E. S. Morse in the “Annals of the New York Lyceum of Natural History” (X, 1869), “On the Carpus and Tarsus of Birds,” is of much scientific value.