. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 318 AVES. mission, it passes at once to the stomach to be there successively digested, and the gullet pre- sents no partial dilatations to serve as a tem- porary reservoir or macerating receptacle. But in the larger Raptorial Birds, as the Eagles and Vultures, which gorge themselves at un- certain intervals from the carcasses of bulky prey, the oesophagus does not preserve a uni- form width, but undergoes a lateral dilatation anterior to the furculum at the lower part of the neck. This pouch is termed the ingluvies or cr
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 318 AVES. mission, it passes at once to the stomach to be there successively digested, and the gullet pre- sents no partial dilatations to serve as a tem- porary reservoir or macerating receptacle. But in the larger Raptorial Birds, as the Eagles and Vultures, which gorge themselves at un- certain intervals from the carcasses of bulky prey, the oesophagus does not preserve a uni- form width, but undergoes a lateral dilatation anterior to the furculum at the lower part of the neck. This pouch is termed the ingluvies or crop (/>, Jig. 156). at Fig. Digestive canal of an Eagle. In those birds, again, the food of which is exclusively of the vegetable kind, as grains and seeds, and of which consequently a great quantity must be taken to produce the ade- quate supply of nutriment, and where the cavity of the gizzard is very much diminished by the enormous thickness of its muscular coat, the crop is more developed, and takes a more important share in the digestive process. Instead of a gradual cylindrical lateral dila- tation of the gullet, it assumes the form of a globular or oval receptacle appended to that tube, and rests upon the elastic fascia which connects the clavicles or two branches of the furculum together. In the common Fowl the crop is of large size and single (b,fig. 157 : I,fg. 171), but in Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Todd, Robert Bentley, 1809-1860. London, Sherwood, Gilbert, and Piper
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