128 CLINICAL VETERINARY MEDICINE AND SURGERY. 



have been chronicled in veterinary Hterature, the most interesting being 

 that by Polansky. To those recorded I could add several, one of which 

 I saw here during the present year. My assistant will read you a 

 summary. 



Case i. — A fourteen-year-old gelding. For some weeks the animal 

 had fed badly, shown difficulty in breathing, and rapidly become 

 fatigued during work. Examination of the digestive and respiratory 

 ■organs revealed nothing abnormal. On auscultation of the heart, we 

 heard on both sides, but more particularly on the left, a rough metallic 

 murmur, beginning with diastole and extending throughout the whole 

 pause ; almost as distinct at the apex as at the base of the heart, and 

 extending above and behind the latter as far as the middle of the 

 chest. The first sound and the short pause were normal. The second 

 sound was absent. 



The arterial circulation was greatly disturbed. The pulse was very 

 strong at the submaxillary, and could readily be detected at all the 

 superficial arteries — the temporal, masseter, posterior auricular, sub- 

 maxillary, radial, coccygeal, metacarpal, and digital. At the lower 

 portion of the jugular furrow a distinct carotid pulse was seen at each 

 systole. The small superficial arteries, but especially the temporal 

 and metacarpal, bounded at each contraction of the heart; there was 

 a true " arterial dance." Examination of the aorta only revealed 

 violent pulsation, but no murmur. 



With this patient we only received the following information : — 

 " For some time it had eaten less than usual, and became fatigued on 

 the least exertion." After glancing at the buccal cavity and con- 

 junctiva, I examined the pulse at the submaxillary; it was strong and 

 bounding. On auscultating the heart I noted during the second sound 

 and pause a rough metallic murmur, most distinct at the base, but 

 audible (though less clearly) towards the apex and along the course of 

 the aorta for a height of about eight inches. The horse was suffering 

 from aortic insufficiency. Up to this point the case revealed nothing 

 extraordinary, but, while again taking the pulse at the submaxillary, I 

 happened to glance towards the temporo-maxillary articulation, and 

 then noted that each time the submaxillary dilated under my finger 

 the subzygomatic visibly bounded. The other superficial arteries 

 showed the same phenomenon, especially the two carotids, at the 

 lower portion of the jugular furrows, and the metacarpals. On that 

 day I was only able to make a rapid examination, and unfortunately 

 the patient was not brought back. 



