. Public health papers and reports presented at the ... annual meeting of the American Public Health Typhus Smallpox = Diphtheria o LaGrippe — Maxima x—it-Minima 9 Humidity . * Celsius. t Pluviometer. Diagram showing- the mortality from Typhus, Small-pox, Diphtheria and LaGrippe in the City of St. LouisPotosi, Mexico, in relation with the maxima and minimatemperatures and relative humidity of the air by the rairfall in 22 months, from the 1st of January, 1898, till tht31st of October,

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