Dr. Charles Cameron, M.P.

Since 1836 our statistics have been compiled so as to enable us to compare the mortality, not merely in small-pox occurring in all classes of vaccinated persons, at different periods, but in each separate class of vaccinated persons—in persons, that is, with one, two, three, or four good or indifferent marks. I have gone into these details, and found that not merely has the mortality in smallpox occurring after vaccination progressively increased in the aggregate, but it has increased in each class of cases, and increased enormously in the best vaccinated class of cases.—Letter to The Times, May 24th, 1881.