Epidemics. 251 



The rot in sheep is not the least connected with the 

 sore feet.* 



The year 1838 was the first of my hearing of the mouth-and- 

 fobt disease in cattle, sheep, and pigs. I remain, etc., etc., 



To R. F. B. J. C. 



N.B. Mostly, if not always, false membrane is found in 

 the trachea and bronchi. t 



It may be said that in the country the disease is much 

 more acute, or was many years ago ; that the liver was 

 rarely so intensely congested or enlarged in town as in the 

 country, but the kidneys were much the same in both 

 localities. The brain was very rarely affected in town. 

 Upon the whole, the disease was more sub-acute in London, 

 and acute in the country ; and, like the tolerance of blood 

 letting, the sthenic condition of constitution during illness, 

 and tolerance to blood-letting, remained in full vigour much 

 longer in the country than in large towns and London. 



When an account is now read of pleuro-pneumonia as 

 affecting cattle, the extent of disease and its intensity will 

 be found to be very much abated, though still very fatal ; 

 but anyone characterizing the epidemic as simply pleuro- 

 pneumonia, takes a very narrow view of the real nature of 

 the affection. 



The chronic congestion of the lungs in man from 1849 to 

 1853 was far more complicated than now ; the trachea, and 

 bronchi, the heart, with occasionally dropsy, and not in- 

 frequently suppression of urine for twenty-four hours, com- 

 plicated this affection. But now the complaint, upon the 



* It is a liver affection. 



f In the Farmer's Magazine, 1851, an account of the peri-pneumonia 

 in cattle in Auvergne is given by M. Yvart. This account refers chiefly 

 to the lungs and pleurse, and is fairly given for extreme cases ; but I 

 may add that J. C.'s account is much shorter, and agrees very much 

 more with my own personal observations in 1851. 



