Dr. Caron, 22, Rue du Bouloi, Paris, Chevalier of the Legion of Honour, and late Government Physician to the Paris Prisons:

Writes, under date of March 20th, 1870 :—Vaccination, so called, modifies not one tittle of either the virulence or the consequences of the small-pox. I have long since refused to vaccinate at any price.