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THE PROPER SHAPE OF THE SOLE. .
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To recapitulate what we have already said: A sole is of the proper construction when a line (see Fig. 22 c d), drawn at half the breadth of the great toe distant from, and parallel to, the inner margin of that toe, shall, when carried backwards, pass through the centre of the heel. In the usual form of a sole this line passes out of the inner margin of the heel (see Fig. 7). If, then, the preservation of the primary straight line is, as has been already shown, the principal point in the formation of a proper sole, it
follows, that if it be thought desirable to have pointed shoes, the pointing must be effected from the outer side, as indicated in the annexed Figure (24).
In a pair of shoes made on these principles, placed side
