246 DISEASES OF TRUE INFECTION. 



patients snap frequentl}', as if they were catching flies, and, as a 

 rule, will bite any animal or man that will come within their reach. 



The biting and delirium are not constant, but appear after 

 alternate periods of rest, followed by uncontrollable delirious at- 

 tacks, especially if another dog should come near. These attacks 

 may occur at intervals varying from one to four hours. The pe- 

 culiar change in the voice is due to a paralysis of the vocal cords, 

 and the sound of the bark is prolonged into a higher vocal sound, 

 between a howl and a bark, that is harsh and raw. Eepugnance to 

 water does not exist in the dog as in man, but toward the end of 

 the second stage, from paralysis of the muscles of deglutition, we 

 see great difficulty in swallowing. Vomiting sometimes occurs, and 

 there is great difficulty in defecation. There is very little altera- 

 tion in respiration, but it may be slightly increased. The pulse is 

 increased; the temperature also rises, but falls toward the end of 

 the disease. 



The duration of the second stage, which does not always present 

 all of the characteristic symptoms, may last from two to four days. 

 After the paroxysms have increased in intensity and the intervals 

 betweea them grow shorter the paralytic, or last, stage begins. 

 The animals rapidly become emaciated; the eyes are staring, dull, 

 and the eyeball is retracted into the skull. The conjunctiva is 

 generally hypersemic ; the hair is erect ; and we begin to see symp- 

 toms of paralysis. As a rule, the first sign of this is a paralysis 

 of the muscles that close or raise the lower jaw. This allows the 

 saliva to run out of the corners of the mouth and form threads 

 which hang down, and we easily recognize the fact that the tongue 

 and lower jaw have lost their power. The tongue becomes lead- 

 colored and hangs out of the mouth. Soon we see paralysis of the 

 posterior extremities. This begins with a staggering, unsteady gait, 

 and finally total inability to use the posterior half of the body. 

 Then the animals stretch themselves out and become completely 

 paralyzed, or in the last stage we may see convulsions, but that is 

 very rare. Death, as a rule, occurs in the fifth to the seventh day 

 after the. onset of the disease. In rare instances it may last ten 

 days. 



The quiet or dumb form of rabies, according to Bollinger, 

 comprises about 15 to 20 per cent, of all cases. The translator 

 thinks that the average given of this form of rabies is entirely too 



