THE LIFE OF A FOXHOUND. 163 



endemically are very often exempted from 

 other serious indispositions; and the natives 

 of a country or district frequently become 

 inured by habit to influences which at once 

 manifest their power over newly-imported 

 strangers, especially in tropical regions. In 

 countries inhabited by different races of men, 

 the same circumstances do not always produce 

 the same effects upon different varieties. The 

 water of the Seine produces disorder in the 

 Londoner, to which the Parisian, who is 

 accustomed to it, is exempt. The treatment 

 also of similar diseases often requires to be 

 very different in consequence of the locality 

 where it appears, and also the constitution 

 and habits of the patient. 



" The miasmata, or particles which 

 emanate from the surface of the earth, 

 produce marked effects upon the human 

 constitution in those places where they 

 prevail. The districts where they are most 

 conspicuous are the marshes, fens and 

 swamps in Lincolnshire, Cambridgeshire, and 

 Essex : intermitting fevers and agues are 

 the consequence. Although marshy districts 

 are pre-eminently capable of engendering 

 miasmata, they are not exclusively so : the re- 



