Water bears a very important part in relation to the human system and preservation of health. It combines with the tissues of the body, and forms a necessary part of its structure. In the case of a man weighing one hundred and fifty-four pounds, one hundred and eleven would consist of water. It enters very largely into the composition of our food. Although water is so important a factor in our existence, and although its vitiation often gives rise to that deadly pestilence, typhoid fever, yet, strange to say, there are comparatively few people who possess any trustworthy information respecting its primary sources and purest forms. The object of this paper will be to afford our readers some useful hints respecting the various kinds of water and their relative purity, also to mention certain wise precautions requisite in order to avoid impure water.

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