230 THE FARMER S VETERINARIAN 



very good. Pouring cold v^ater from a height and 

 then immediately hot v^ater sometimes greatly 

 strengthens the muscles and has its use in treat- 

 ing. Rubbing the parts with mustard stimulates 

 them, and in some cases good results. Paralysis 

 resulting from injury usually disappears as the part 

 returns to its normal state. 



PARASITES.—These are living plants or 

 animals that live temporarily or continually in the 

 bodies of other plants or animals and draw their 

 nourishment from their host. It is doubtful if 

 there is a single farm animal that does not harbor 

 parasites at nearly all times during its life. There 

 may be many of these in the same individual at the 

 same time. Parasites may be harmful or not, as 

 the case may be. Parasites may be divided into 

 two classes — plant parasites and animal parasites. 

 The bacteria and molds are the most important 

 among the former, whereas in the latter certain 

 minute protozoa, certain forms of insects and cer- 

 tain worms are the most commonly met. Such 

 diseases as staggers, tuberculosis, and typhoid 

 fever are the result of bacterial diseases, while 

 Texas fever is an example of the protozoa class ; 

 and then the insects and worms are types with 

 which we are all acquainted. When a disease is 

 caused by either, discussion will be found under 

 the name of that disease. 



PARTURIENT APOPLEXY.— See Milk Fever. 



PARTURITION, DIFFICULT.— See Obstet- 

 rics. 



PERITONITIS.— An inflammation of the mem- 

 brane which lines the abdominal cavity and which 

 also invests the abdominal organs. It may be 

 caused from some exposure to cold after some 

 weakening disease. Some injury to the abdomen 



