The hand camera and roll holder are especially valuable in rapid reconnois sance work when used in conjunction with the bioy cle, and results may be Obtained more rapidly than by a mounted reconnoissance using the cavalry sketching board. For hasty work in the field, the photographer needs but little in the shape of impedimenta. A hand camera, preferably 5 by 7 with Russia leather bellows, double plate holders, or a roll holder, a rapid rectilineal lens, pneumatic shutter, folding tripod, and rubber focusing cloth, in which the camera may be inclosed for protection against the weather, will prove a com pact and light kit for any field work. The cut films now manufactured possess a great advantage over glass, owing to their lightness, portability, and absence from liability to breakage.
