PART I.] Cholera, Like Malaria, Claims a Telluric Origin. 299 



at long periods after ^the original attack and without subsequent exposure to the 

 influences that originally produced it. It is true that although malarious fevers are not 

 so appallingly fatal as cholera, nevertheless it has not been always so. During periods 

 when cholera was either unknown in Europe or a far milder form alone of it prevailed, 

 malarial fevers almost depopulated whole tracts of country — many parts of England 

 suffered terribly, and Sir Gilbert Blane states that the mortality in London from ague 

 during 1558 was so great that the living could not bury the dead. 



We would not for a moment have it supposed that we consider the two affections 

 as mere gradations of the same disease ; all that we desire to urge is that cholera has 

 as good a claim as malarial diseases to a telluric origin. What the essential cause 

 may be remains unknown in both cases j but the fact that the production of malaria is 

 so greatly under the control of improvements in local conditions warrants us in looking 

 confidently to similar results with regard to the cause of cholera also. 



Calcutta, 



December 1877. 



