The animal kingdom, arranged after its organization : forming a natural history of animals, and an introduction to comparative anatomy . )e remarkably wide]; the feet have ashort membrane which connects the external and front toes, though it is true that the outertoe is often directed backward, as observable in the Owls. Their nostrils are simply piercedin the corneous substance of the beak, the cutting edges of the mandibles are dentelated,and the sternum (fig. 106), at least that of the Touraco, has not those two very deep emar-gbjations common to the Gallinacea. [Here we have another insula
The animal kingdom, arranged after its organization : forming a natural history of animals, and an introduction to comparative anatomy . )e remarkably wide]; the feet have ashort membrane which connects the external and front toes, though it is true that the outertoe is often directed backward, as observable in the Owls. Their nostrils are simply piercedin the corneous substance of the beak, the cutting edges of the mandibles are dentelated,and the sternum (fig. 106), at least that of the Touraco, has not those two very deep emar-gbjations common to the Gallinacea. [Here we have another insulated group, which also comprises the Colies (p. 201), the anatomy of \ould enumerate some .additional subdi\istnns, but their distinsh/e rharaitcr* cimld not be ^i- ih the requisite brevity •J 20 which at once indicates the propriety of arranging it in the present series, among which it is mostnearly related to the Toucans. They have hut twelve true cervical vertebrae ; and the sternum,though singularly small, presents no affinity for that of the Poultry. The stomach is large and but slightly muscular, extending into the abdominal por-tion of the cavity of the body; and the intestines are shortand without cceca. Unlike the Toucans, however, they possessa small gall-bladder; but the tongue, at least in some ofthem, is similarly barbed towards the tip. The feet have thetirst and fourth toes directed laterally, for which reason theycommonly perch lengthwise on the horizontal branches oftrees, which they perambulate longitudinally, clasping thebough with their two laterally disposed toes, while the othersare directed forwards. Their movements are light and elegantin the , a particular in which they differ remarkablyfrom the Colies: they pass with an easy sailing flight fro
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Keywords: ., bookcentury1800, bookdecade1840, booksubjecta, booksubjectzoology
