216 



whatever system of organs the lead is deposited mostly there will we 

 have the symptoms of nervous debility most manifest. If in the lungs 

 the breathing becomes difiQcult aud the animal gets out of breath very 

 quickly when he is compelled to run. Roaring also is very frequently 

 a symptom of lead-poisoning. When it affects the stomach the animal 

 gradually falls away in flesh, the hair becouies rough, the skin tight, 

 and colicky symptoms develop. When the deposit is j^rincipally in the 

 muscles partial or complete paralysis gradually develops. When large 

 quantities of lead have been taken in and absorbed, symptoms resem- 

 bling epilepsy may result, or coma aud delirium develop and prove 

 fatal. In lead-poisoning there is seldom any increase in temperature. 

 A blue line forms along the gums of the front teeth, aud the breath 

 assumes a peculiar offensive odor. Lead can always be detected in the 

 urine by chemical tests. 



Treatment. — The administration of 2-dram doses of iodide of potassa, 

 three times a day. This will form iodide of lead in the system, which 

 is rapidly excret^ed by the kidneys. If much muscular weakness or 

 paralysis is present, sulphate of iron in dram doses, and strychnia in 2- 

 grain doses may be given twice a day. In all cases of suspected lead- 

 poisoning all utensils which have entered into the supply of feed or 

 water should be examined for the piesence of soluble lead. If it occurs 

 near lead works great care must be given to the supply of uncoutam- 

 iuated fodder, etc. 



UREMIA. 



Urfemic poisoning may affect the brain in nephritis, acute albuminu- 

 ria, or when, from any cause, the functions of the kidneys become im- 

 paired or suppressed aud urea (a natural product) is no longer elimi- 

 nated from these organs, causing it to accumulate in the system and give 

 rise to uraemic poisoning. 



Symptoms. — Urtemic poisoning is usually preceded by dropsy of the 

 limbs or abdomen ; a peculiar fetid breath is often noticed ; then drow- 

 siness, attacks of diarrhea, and general debility ensue. Suddenly ex- 

 treme stupor or coma develops ; the surface of the body becomes cold ; 

 the pupils are insensible to light ; the pulse slow and intermitting ; the 

 breathing labored, and death su[)ervenes. The temperature through- 

 out the disease is seldom increased, unless the disease becomes compli- 

 cated with acute inflammatory disease of the brain or respiratory 

 organs, which often occur as a result of the urea in the circulation. 

 Albumen and tube casts may frequently be found in the urine. The 

 disease almost invariably proves fatal. 



Treatment. — This must be directed to a removal of the cause. (See 

 ''Diseases of the Kiduey.") 



ELECTRIC SHOCK. 



Electric shock, from coming in contact with electric wires, is becom- 

 ing a matter of rather frequent occurrence, and has a similar effect upon 



