. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds . 820 SYSTEM A TIC SYNOPSIS. — PYG OP ODES. in this cuuutry,—iu the Sinitlisouiiui lustitutiuii, in the Philadelphia Academy, theCambridge Museum, aud Vassar College, Ioughkeepsie (t
. Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds . 820 SYSTEM A TIC SYNOPSIS. — PYG OP ODES. in this cuuutry,—iu the Sinitlisouiiui lustitutiuii, in the Philadelphia Academy, theCambridge Museum, aud Vassar College, Ioughkeepsie (the latter the original of Audubonsfigures). There is an egg in each of the first two meutioned collections. In pattern ofcoloration the egg is like that of the razor-billed auk, though it is of course much larger, meas-miug about X About 70 skins appear to be preserved iu various museums, withas many eggs, some half dozen more or less complete skeletons, and other bones representingperhaps a hundred Fig. 561. —Great Auk. (From Sport with Gun and Rod. The Century Co., N. Y.) Part IY. SYSTEMATIC SYNOPSIS. FOSSIL BIRDS OF NORTH AMERICA, There is at present no satisfactory evidence that Birds existed in North America before theJurassic period ; the footprints in the sandstone of tlie Connecticut Valley attributed to Birdshaving probably all been made by Dinosaurian Reptiles (p. 63). A number of CretaceousBirds have been known for S(jme years, sis given in the original edition of this work (1872);but it is only since 1881 that this class of vertebrates has been traced back to the Jurassicby the discovery of Laopteryx priscus on a geologic horizon nearly that of the famousArcluBopteryx. The Tertiary Birds of North America belong to genera identical with, or nearly relatedto, those now living (p. 04). The case otherwise with the earlier forms from the Cretaceousand the Jurassic, which represent diflerent jmrnary divisions of the class Aves (p. 237),
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbirdsnorthamerica
