Issue 22 and Volume 61.

THE RELATION OF WATER SUPPLY TO DISEASE In discussing the relation of water supplies to disease, I shall confine my remarks to domestic supplies, as the importance of the proper selection and treatment of public supplies is no longer questioned, and their control and inspection is regulated by law. The necessity for protection is recognized, and prejudice and ignorance regarding source and methods of purification have greatly diminished, though there is yet a latent impression, in the minds of many, that the reagents employed in purification are objectionable and injurious to health. I shall not recite a long list of statistics showing the change in the typhoid death rate in cities following the introduction of filter plants, and purification of sources of supply. These facts are too well established to admit of discussion, and too well known to be of interest. The necessity for the purification of water supplies has…

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