Pasteur found that the germs of anthrax could be cultivated outside the body and their virulence weakened either by growing them at too high a temperature or in an unsuitable medium.
This agitation was directed with particular virulence against the high commissioner, whose recall, it was asserted, would remove the chief obstacle to peace.
The virulence of the attacks upon the work, as much as its intrinsic merit, caused it to be widely read; it was translated into almost all the languages of Europe.
The upper classes are said to have suffered less than the poor; but the kings daughter Joan and two archbishops of Canterbury were among the victims. The long continuance of the visitation, which as a rule took six or nine months to work out its virulence in any particular spot, seems to have cowed and demoralized society.
His mortification was little likely to temper the habitual virulence of his pen, which rarely produced anything more acrimonious than the attacks he at this period directed against Burnet and his former friend Steele.