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of climate, to which the animals are 

 subjected, the change of habits and 

 the hardships, undergone in the opera- 

 tion of tuberculinization, must be con- 

 sidered. These ill effects have been 

 recorded in all the rural milk establish- 

 ments where thermo-reaction has been 

 effected. 



To resume: Dr. Bidart thinks thai the 

 thermo-reaction is a good means of diag- 

 nosis, but offers difficulties which make it 

 impracticable on a large scale, among 

 the country-bred cattle in the Argentine. 

 Its application is far better for diagnosing 

 tuberculosis in stalled cattle. The ophthal- 

 mo and cuti-reaction is superior to the 

 hypodermic injections of Tuberculine 

 for the country. Concerning this new 

 method, there is no need to insist, being 

 as it is the result of investigations carried 

 out by Calmette, Wolff, Vallee von 

 Pirket and successfully tried by Lig- 

 nieres in the Argentine. 



