Canada.

ONTARIO AND DIPHTHERIA.  The Provincial Board of Health has issued a circular to the chairmen and members of the local boards of health throughout the province, calling attention to the still notable prevalence of diphtheria in Ontario, as instanced by the following figures: in 1891, there were 952 deaths from this disease, while in 1898 there were 634. In order to show the beneficial results that have accrued from the employment of antitoxin in this, since its introduction, the circular tabulates figures taken from the annual reports for 1898, of the Metropolitan Asylums Board Hospitals of London, England; and also evidences by age, the notable falling off in the mortality statistics from the first to the fifth year. After this citation, the local boards of health throughout the province are called on to put forth every effort to obtain the earliest information possible in regard to existing cases of diphtheria,