190 MICROBES, FERMENTS, AND MOULDS. 



no scope for the fancy of a draughtsman, there can 

 he no doubt as to the gross error committed by the 

 observer. 



As for Freii'e's attempts at vaccination, his own 

 statistics are far from being favourable to his method ; 

 in fact, they prove that vaccination increased the 

 rate of deaths in the proportion of 19 per 100. 



Much more scientific researches were undertaken 



Fig. 86.— Section of Kidney in yellow fever (Babes), showing a capillary vessel, c, 

 filled with chaplets of micrococci. 



by Comil in Paris, on some anatomical preparations, 

 preserved in alcohol, which were sent from Brazil. 

 He found in the liver and kidney of the victims of 

 yellow fever, chaplets of micrococci or bacteria (Fig. 

 85), only visible under a very strong magnifying 



