Endocarditis. 467 



noise of the blood rushing through the narrowed orifice between 

 auricle and ventricle. It is usually loudest behind the middle of 

 the shoulder on the left side. Feeble pulse, frequent imminence 

 of suffocation and filling of the limbs, etc, , are nearly constant. 



Narrowing of the Tricuspid orifice. Symptoms nearly 

 identical with the last. Venous pulse more constant. Blowing 

 murmur sometimes loudest on the right side of the chest. 



Induration or insufficiency of the aortic valves. Blowing 

 murmur with the second sound of the heart. Double rushing 

 sound in the carotid with each heart's beat. There is an appreci- 

 able interval between the beat of the heart and corresponding 

 pulsation at the jaw. 



Induration or insufficiency of the pulmonary valves. Blow- 

 ing murmur with the second heart sound, but no corresponding 

 double sound in the carotid, nor any marked retarding of the 

 pulse. 



Loose coagula in the heart or adherent ones (^polypi) produce 

 one or other of the above class of symptoms, according to the 

 particular orifice they tend to block, or the valves the function of 

 which they impair. 



Anaemia and leukaemia may have blowing murmurs with the 

 first or second heart sound. 



Embolism. Plugging of arteries. Another class of symp- 

 toms sometimes supervenes because of loose clots being washed 

 on into the arteries, and blocking them when they reach those 

 that are too small to transmit them. These symptoms will be as 

 varied as the organs the arteries of which are plugged. If in .the 

 brain, there may be dullness, stupor, vertigo, somnolence, delirium ; 

 if in the liver, biliary and digestive derangement ; if in the lungs, 

 cough with the other signs of pneumonia and abscess ; and if in 

 the limbs, lameness and paralysis, (brought on or aggravated by 

 exercise, and often removed by a few minutes' rest), wasting of 

 the muscles, etc. (^See Embolism) . 



Cattle. Symptoms. The general and physical phenomena of 

 the disease are essentially the same as in the horse. The primary 

 disease of which this is a sequence, is, however, liable to differ, 

 and attention to this may assist in diagnosis. Thus a preceding 

 rheumatism, tuberculosis, or metritis, should be especially looked 

 for, without forgetting the diseases of the liver, kidneys, navel. 



