Part of this goes, as you will remember (p.

16), to dissolve the food so that it can be readily absorbed by our body cells in the process of digestion.
WHERE OUR DRINKING WATER COMES FROM Water Contained in our Food is Pure.

Seeing that five-sixths of our food is water, it is clearly of the greatest importance that that water should be pure.

That part of our water supply which we get in and with our foods is fortunately, for the most part, almost perfectly pure, having been specially filtered by the plants or animals which originally drank it, or having been boiled in the process of cooking.
[Illustration: THE SPOUTING FOUNTAIN Where no lips need touch the cup.] Water is Always in Motion.

The part of our water supply which we take directly, in the form of drinking water, is, however, unfortunately anything but free from danger of impurities.