. Les oiseaux de l'Amérique : à partir de dessins réalisés aux Etats-Unis et sur leurs territoires. Les glandes proventriculaires forment une ceinture de 1^ inchesin de largeur. Le foie est très grand, ses lobes sont très inégaux, les 2 pouces droit 8 douzièmes de long, les 1 pouce gauche 8 douzièmes. Intestin 5S^ pouces de long, sa largeur moyenne de 5 douzièmes. La trachée, d'une longueur de 6|- pouces, a d'abord une largeur de seulement 3douzièmes, mais à la distance de trois quarts d'un pouce s'agrandit à 4|-douzièmes, et continue ainsi pour 2 pouces; elle se contracte ensuite à 2 douzièmes, et encore à la partie inférieure s'agrandit à 5i douzièmes,

• Contributeur: Reading Room 2020 / Alamy Banque D'Images
• ID de l’image: 2CP0EBR
• Taille du fichier: 7,2 MB (478,7 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1182 x 2115 px | 20 x 35,8 cm | 7,9 x 14,1 inches | 150dpi

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Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

. The birds of America : from drawings made in the United States and their territories . rfaces. The proventricular glands form a belt 1^ inchesin breadth. The liver is very large, its lobes very unequal, the right 2inches 8 twelfths long, the left 1 inch 8 twelfths. Intestine 5S^ inches long, its average width 5 twelfths. The trachea, which is 6|- inches in length, has at first a breadth of only 3twelfths, but at the distance of three-quarters of an inch enlarges to 4|-twelfths, and so continues for 2 inches; it then contracts to 2 twelfths, andagain at the lower part enlarges to 5i twelfths, and terminates in a largetransverse bony dilatation or tympanum, of which the length is 1 twelfths, the breadth 1 inch 2 twelfths; it projects as usual to the left side, where it isof a rounded form. The rings of the trachea are 124, broad, firm, and wellossified. The bronchi are of moderate width, of about 25 half rings. Thelateral muscles are strong, the sterno-tracheal of considerable size, comingoff at the commencement of the tympanum, and there are no inferiorlaryngeal muscles.. LONG-TAILED DUCK. 379 In a female, the intestine is 57 inches long; its width in the duodenal part3 twelfths; the coeca 4 inches long, 3 twelfths in breadth at the widest part, at the base 1 twelfth, and toward the end 2 twelfths; their distance from theextremity 3 inches. LONG-TAILED DUCK. ^Fuligula glacialis, Linn. PLATE CCCCX—Males, Female, and Unfledged Young. In the course of one of my rambles along the borders of a large fresh-water lake, near Bras-d?or, in Labrador, on the 2Sth of July, 1S33, I wasdelighted by the sight of several young broods of this species of Duck, allcarefully attended to by their anxious and watchful mothers. Not a malebird was on the lake, which was fully two miles distant from the sea, and Iconcluded that in this species, as in many others, the males abandon thefemales after incubation has commenced. I watched their motions a goodwhile, searching at the same time fo

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