84 THE CONTAGIOUS TYPHUS 



supply for our use. Above all, we wish it to 

 be remembered " Scribo nee fata, nee 

 sect qua? ratio, SCHSUS, et experieiitia doceitl 



CHAPTEE II. 



The Origin and Causes of the Ox Typhus. 

 I, 



I have drawn my conclusions as to the 

 preventive treatment of typhus in the ox, 

 from the knowledge I had acquired of its 

 morbid phenomena, its nature, and its non- 

 recurrence ; and it is a logical deduction quite 

 as accurate as could be the result of a syllogism. 

 The study of the origin of this typhus, and of 

 the causes by which it is generated and spread 

 abroad, will supply us with additional argu- 

 ments to sustain this deduction, as well as 

 those signs and indications which are the very 

 foundation of curative treatment. The de- 

 scription of the disease will contribute to the 

 same result; for the rational treatment of a 

 distemper can be derived only from a know- 

 ledge of all the phenomena which occasion it, 



