Teta7iy. 151 



/«/za/i?^ it produces intoxication, excitement, general anaesthesia 

 and finally collapse. In rabbits it causes intense excitement, 

 giddiness, swaying from side to side, and reckless leaps forward, 

 followed by profound sleep with deep stertor, and paraplegia for 

 half an hour after the return of consciousness (Oliver). When 

 taken for a long time in smaller quantity it caused weakness, 

 emaciation, tremors, paraplegia, and death in convailsions. There 

 was polyuria, with excess of sugar but neitlier urea nor albumin. 

 The large cells in the motor areas of the brain, when stained by 

 Golgi's method, showed the axis C3dinder distorted and varicose, 

 and the cytoplasm stained unequally. The action on dogs was 

 essentially the same, and in neither animal were changes in the 

 blood globules observed (Oliver). 



In man slow poisoning caused headache and exhilerant intoxi- 

 cation, followed by depression, mental apathy, dullness, loss of 

 memory, impaired vision, hearing, sexual desire and muscular 

 power. Cramps are common (Delpech, Curtis). 



Treat ine7it consists in giving pure air, good food, mas.sage, 

 galvanism, tonics, and for the persistent nervous failure jihos- 

 phorus. 



TETANY. 



Definition. Casual and experimental cases in animals. Causes : Excision 

 of the thyroid, indigestions with fermentation, rheumatism, infection, ma- 

 laria, rachitis, want of hygiene, hereditary or developmental irritability, 

 microbian poisons. Symptoms : intermittent spasms with semi-flexed 

 limbs, tremors. Diagnosis : bj- the complete intermissions of spasms, and 

 by pressure on nerve or artery, rousing them. No fever. Like spasms of 

 ergot. Treatment : thyroid extract, grafting thyroid ; remove sources of 

 irritation, anti-spasmodics, warm or tepid baths, electricity. 



Definition. Tetany is the name given to a limited contraction 

 of a group of muscles usually in the extremities occurring 

 paroxysmally with intervals, during which it may usually be 

 roused into activity by compression of the nerve or artery pro- 

 ceeding to the muscles in question. 



The disease has not been accorded a place in systematic works 

 on veterinary medicine, though cases have been recorded which 

 are supposed to have been of this nature, and in cases occurring 



