88 PASTURE AND RANGE. 



Wolf, Curtis and Kaupp of the North Carolina Agri- 

 cultural Experiment Station, have recently published an 

 extensive account of their researches on "trem- 

 s bles," in a special bulletin. From the results 

 of feeding experiments they traced the disease to the 

 White Snakeroot. Their treatise gives a complete and 

 valuable account of the symptoms as observed by them- 

 selves and by others. 



Cattle exhibit listlessness, stiffness of joints and slug- 

 gishness with weakness and trembling, especially when 

 driven. There is constipation and a foul "garlicky" 

 breath. It is noted that among a group of animals,, some 

 may escape harm while others contract the disease, 

 though all have eaten the plant apparently to the same 

 extent. In sheep, in addition to the above symptoms, the 

 following are noted : loss of appetite, gritting of the 

 teeth, quick, laboured breathing, marked ataxia, frequent 

 and scanty urination. The trembling is very pronounced 

 and accompanied by tetanic spasms. 



In pigs the appetite is not impaired until the later 

 stages but the trembling is very violent. 



In man there is abdominal pain, vomiting, and exces- 

 sive thirst; otherwise the symptoms resemble those in 

 the lower animals. 



No satisfactory cure for the disease has been discover- 

 ed and the chances for such a discovery are not hopeful, 



as the poison produces fundamental 

 The V Snl l y n Cure cnan S es in the internal organs. The only 



way of overcoming the disease, therefore, 

 is by not allowing the animals access to the Snakeroot. 

 Pasture areas infested by it should be fenced off or cleared 

 of trees and broken up by the plow- 



