FIG. 27.—[MAGIC CAMERA STAND].

FIG. 28.—[IRON CENTRE STAND].

All these various styles of stands are made in sizes to suit cameras from 8×10 to 25×30.

Fig. 28 represents a style of stand which does not classify, but which is a useful stand in a portable gallery or tent. p124

THE PNEUMATIC SHUTTER FOR THE CAMERA.

This device for making exposures in the photographic studio has proved to be so useful and popular as to have secured almost general recognition and adoption among the photographers of America.

The possibility of making exposures in the studio, unknown to the subject, placed a very decided advantage in the hands of the operator, who, standing at any point, could watch the expression of the subject and seize the right moment to secure the impression desired; so that the pneumatic shutter seemed to be the proper complement to the lightning dry plate.

There is a great variety of these shutters exhibited and for sale, and the number continually increases.

The earliest example of this style of shutter that we know of is the Cadett, an English invention, which, in its introduction into this country, served as a stimulus to the inventive genius of Americans, and, as a consequence, we have the great variety that now may be selected from. An effort was made to apply electricity to use in working a shutter, but it did not succeed, and so the rubber tube and bulb became the accepted means for applying the force necessary to open and shut the slides or doors constituting the shutter.