2. This drawer is also of the same material, and is open at the end that fits into the box, that is the end opposite the lens, and should work easily in or out, and admit no light except through the lens, the magnifying power of which need not be very great.
3. The whole interior of box and drawer is to be stained of a dull black colour.
4. Into the top of the box is let a piece of ground glass, occupying the whole breadth nearly of the top, and two-thirds of its length.
5. Into the box is fitted or let a mirror, which faces the drawer and lies at an angle of forty-five degrees.
Now turn your eyes to [Fig. 2], and I will try to explain it. The dimensions of the box are marked in plain figures, as the drapers say. The length of the drawer is about five inches or less. This drawer is represented in the figure as pulled about half-way out. When shut up it will reach the letters C A. The lens is about an inch in diameter, and may be bought cheap at any optician’s, or even fitted for you there.
The piece of ground glass on the top occupies the position marked out by the letters F, E, B, G.
The mirror inside occupies the position indicated by the dotted line A B.
But your camera is not complete yet. You have your dark shade to slip on and fasten. This shade (vide [Fig. 3]) is a lid, open at both ends, that goes right over two-thirds of the whole box when closed, covering that portion of it seen in [Fig. 2] between the squares F, E, G, B and E, H, B, I. This lid is fixed by means of a close-gummed cloth hinge to the box at the dotted line F, E. It is free every way else, so that, when lifted up to an angle of forty-five degrees, it keeps the light away from the ground-glass top, and permits you to see the picture thereon. This shade is, of course, also stained of a dark colour internally.
