190 MICROBES, FERMENTS, AND MOULDS. 
no scope for the fancy of a draughtsman, there can 
be no doubt as to the gross error committed by the 
observer. 
As for Freire’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. 85.—Section of Kidney in yelluw fever (Babés), showing a capillary vessel, c, 
filled with chapicts of micrococci. 
by Cornil 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 
