Page:The American Boy's Handy Book edition 1.djvu/286

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Every Boy a Decorative Artist.
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turned toward any object, that object will be immediately reflected upon the piece of ground glass. No great difficulty need be anticipated by any one in the adjustment of the parts of a camera obscura, as it can be easily arrived at by trial.

If a piece of drawing-paper be placed over the ground glass, and the lens turned toward some object, that object will be reflected upon the glass and shown through the paper in all its natural colors, strong enough to be accurately traced and reproduced.

In this manner considerable amusement and instruction can be derived from a home-made camera obscura.

If one of these instruments be taken into a darkened room, and the lens allowed to point out through the window, everything that passes the house will be reflected upon the ground glass, making a sort of moving, colored, puppet show.

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