By shading off, as I have done, the portion of the area of the diagram according to the individual age, every one may see how much of life is consumed, and w...

By shading off, as I have done, the portion of the area of the diagram according to the individual age, every one may see how much of life is consumed, and what is left.

quote by Warren De la Rue
Submitted by Lucian Velea
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