Veterinary notes for horse owners : a manual of horse medicine and surgery . ., from irritability, when being groomed,and sometimes from idleness. Here the question as to the animalbeing a cribber, will be determined by the absence or presence, onhis part, of any attempt to swallow air. Cribbing, however, is not always characterised by wear of theteeth. The support may be taken by the lips, chin, lower edges CRIE-BITING. 557 of the branches of the jaw, and in exceptional cases by the throatjust below the larynx (Gadeac). When the cribber has obtained his required support, he willtake air into
Veterinary notes for horse owners : a manual of horse medicine and surgery . ., from irritability, when being groomed,and sometimes from idleness. Here the question as to the animalbeing a cribber, will be determined by the absence or presence, onhis part, of any attempt to swallow air. Cribbing, however, is not always characterised by wear of theteeth. The support may be taken by the lips, chin, lower edges CRIE-BITING. 557 of the branches of the jaw, and in exceptional cases by the throatjust below the larynx (Gadeac). When the cribber has obtained his required support, he willtake air into his partly-opened mouth, and having drawn in hischin towards his breast, and arched his neck, he will make a con-vulsive effort to swallow the mouthful of air; and at the same timewill, as before said, emit a characteristic grunt. By drawing histongue backwards and upwards, he will raise the soft palate, andwill close the air-passage which leads into the nostrils, and willalso close the entrance into the windpipe. The windsucker, generally, begins by backing away from the. Fig. 147.—Side view of the incisorlteetii of a crib-bilcr, 30 years old (same as shown in Fig. 148). manger; poking his nose out; sucking air into his mouth, as maybe seen by the forward and backward movements of his lips, whichhe sometimes smacks together, or rolls them from one side to theother as if he was trying to form in his mouth a bolus of food inorder to swallow it. At the same time, he places his tongueagainst his palate. He may stop at this point, in which case hiseffort will end only in the swallowing of saliva, which does notsatisfy him {Cadeac). In well-developed cases, he draws in hischin towards his breast, arches his neck, and violently contracts themuscles of deglutition in the same manner as the cribber, in hiseffort to swallow the mouthful of air, which, on account of its ex- 558 NEEVOUS DISEASES. treme compressibility, he finds difficult to get down.^ It hasoften been remarked that an o
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