VI INTRODUCTOKY K K M A K K S. 



If both internal and oxtornul causes of sickness arc combined, un- 

 der ]ieculiar circumstances, the result will be, A'isible changes in the 

 apix'arance of the animal, called symptoms of sickness. These show 

 themselves, — 



First. — In the organs of feeling and motion, by pain, itching, 

 dullness, giddiness, trembling, sudden starts, running off, etc. 



Second. — In the circulation of the blood; the beating of the 

 pulse is either too slow or too quick, too soft or too hard. 



Third. — In the digestive organs, by restlessness, colic, etc. 



Fourth. — In the urinaiy organs, by too much or too sj^arse evac- 

 uations, even mingled with blood. 



Fifth. — In the a])pearance of the skin ; by all forms of scaly erup- 

 tions, etc. 



Sixth. — In the organs of generation ; by involvmtary emissions 

 and weakness^ 



Seveis'th. — In the exterior apj^earance of the body, boils, etc. 



Diseases are either acute or chronic, and convalescence in the 

 former may often appear with stormy signs, called crises. The symp- 

 toms of the crisis will be according to the character and seat of the 

 disease ; critical j^erspiration, urinary flow, diarrhcBa, eruption of the 

 skin, etc. The crisis may repeat itself until the disease is conquered, 

 if not strong enough to do so the first time. Its appearance will usu- 

 ally be made on the uneven days of the run of the disease ; as the 

 third, fifth, seventh, ninth, up to the twenty-first. Disease will often 

 change its nature or its seat. 



Most diseases are curable, if jiroper care be taken in the first stages 

 of their appearance and judicious means applied to support nature in 

 its battle ; but success is not always certain, and death is inevitable 

 if the causes for the disease are not removed. The only natural death 

 is that of old age — by waste of substance and ossification — a very 

 rare occun-ence, indeed, in these (even for horses) artificial times. 



