Dr. Stramm, Medical Staff Officer in the Prussian Army.

I, myself, have been vaccinated, and twice successfully re-vaccinated; and yet, in the exercise of my official medical duties during the late epidemics in Prussia, I have been attacked with small-pox in the most virulent confluent form, and been only saved from worse consequences by a speedy change of climate.—From a Pamphlet on Vaccination.