356 DISEASES OF CATTLE. 



gious typhus existed side by side with pulmonary disease 

 in England, in the middle of the last century. Why the- 

 orize any further, for it is so plain that those who run 

 can read, that veterinary surgeons, politicians and noto- 

 rity hunters have, at the expense of the suffering farmers 

 of Europe, continued to perplex and puzzle too long? 

 The same has been attempted in Pennsylvania, and 

 other States of the Union, even in cases of simple spo- 

 radic pleuro-pneumonia in milch cows, whereby, with a 

 metmorphosis far outstripping those of Puhlius Ovidius 

 JSfaso, the one disease was, as if by the wand of the 

 magician, converted at once into that of another. 



Symptoms. — We are told that the disease has its period 

 of incubation, varying from four to fourteen days. This 

 is simply nonsense; where is the repeated incubation in 

 cows when affected with pleuro-pneumonia ? No where, but 

 in the minds of men who know nothing of pathology. 

 Is incubation to be taken for blindness, and ignorance for 

 science and education ? It may be asserted, with equal 

 truth and justice, that the condemned culprit, or rather 

 suspended animation^ has its period of incubation from the 

 time of his condemnation to death, till the very moment 

 for preparation for eternity, however long that may be. 

 The weeping eye, the acrid drop from the inner corner of 

 the nostrils, together with slight rough sounds from the 

 wind-pipe, will tell' the intelligent and scientific observer 

 that something is wrong, and all this can be told from 

 twelve to twenty-four hours from the time of attack. 

 Where, then, is the period of incubation ? The echo answers 

 where ! The husky cough, with dullness and prostration, 

 follow the weeping eye and nostril. The back is arched, 

 appetite and rumiation irregular, the rigor and the chill 

 will tell that blood poison is present, and suppuration is 



