DOMESTIC ANIMALS. 87 



CONTAGIOUS DISEASES. 



IT is not my intention to describe all the contagious 

 diseases to which the domestic animals are liable, as 

 that would take up more space than is contained in this 

 small volume. I shall therefore only notice two or three 

 of the most common and give such advice on manage- 

 ment and prevention of the spread of the diseases as 

 any stock owner can easily understand and carry out. 

 Some of the common contagious diseases that I shall 

 omit to describe are spinal-meningitis in the horse, 

 pleuro-pneumonia in cattle and cholera in hogs. 



INFLUENZA, STRANGLES, DISTEMPER, PINK- 

 EYE, EPIZOOTIC, COLT-ILL, HORSE-AIL. 



IT is not certain whether all the various forms of dis- 

 ease known by the above names are caused by the same 

 species of germ or not. Judging from clinical exper- 

 ience, it would seem that they are only varying forms 

 of one specific disease. It is commonly said that one 

 attack of distemper will prevent a second attack; but 

 this is certainly erroneous, as I have repeatedly seen 

 the same horse suffer from two or three attacks of this 

 disease. 



Causes. Young horses are much more liable to this 

 disease than horses of mature age, although we quite 



