The observations of Sanitarians in other countries and in a few of our States have led to the belief that the occurrence and the fatality of many diseases depends much upon geological structure, soil, topography, elevation and exposure, rain-fall, relations to seas or other bodies of water, density of population, and other local conditions not determined by the latitude or longitude of the locality

The observations of Sanitarians in other countries and in a few of our States have led to the belief that the occurrence and the fatality of many diseases depends much upon geological structure, soil, topography, elevation and exposure, rain-fall, relations to seas or other bodies of water, density of population, and other local conditions not determined by the latitude or longitude of the locality