present; it is very light, its specific PROFESSOR COCKERELL, R.A. Sir Christopher Wren reflected that the hollow spire gravity being only 1°5; and it is of a fine white color, by means of drawing pins (Fig. 1, No. 2). This screen which he had seen or built in so many varieties was, should be… … Fig. 1—THE DERBY HAT AS A CAMERA OBSCURA. the architecture of the human Stebbing’s pellicular cliches, form divine was constructed small frames of stiff card- witha double plate connected board, and a small square of by the light and fibrous but prepared cloth mounted ina firm walls of the hollow…
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