viii.] THE INFECTIVENESS OF CHOLERA. 165 



of twenty-four to forty-eight hours the gelatine became quite 

 liquefied. Four other monkeys experimented on in the 

 same manner yielded no results ; neither microscopically nor 

 by cultivation could comma-bacilli be detected. I conclude 

 from the above successful experiment that owing to the 

 pathological process set up in the intestine, the comma- 

 bacilli, present already before the operation, but in far too few 

 examples to be recognised in the microscopic specimens, had 

 so rapidly multiplied that their demonstration was then 

 comparatively easy. 1 



1 Messrs. Macleod and Milles, in their paper on Asiatic Cholera, 

 say on p. 168, in reference to the above positive experiment in the 

 monkey : " Klein's experiment itself, if it proves anything, proves that 

 he was dealing with an example of spontaneous generation ! Farther, 

 it is not quite clear whether Klein claims that he was dealing with 

 Koch's organism, or only with one identical as to characters given." 



From this it is quite clear to my mind that these observers missed 

 altogether the drift of my argument, or did not read the above concluding 

 passage. 



Other criticisms made by these gentlemen will be dealt with at the 

 conclusion of the next chapter. 



