MAGAZINES.]

[Illustration: FIG. 2--ARRANGEMENT FOR TAKING VIEWS WITH SPECIAL
GEARING FOR THE WINDING OF THE BAND.]

The apparatus is reversible, and may be used for making negatives as
well as for projecting positives. In its new form it is easily
transportable and is no more bulky than an ordinary 5 by 7 inch
apparatus. Nothing is simpler then than to carry it on a journey, if
one desires to make his own negative bands. Since the sensitized film
has to be protected against the light during its entire travel, two
magazines have been arranged (Fig. 1). One of these, A, which is fixed
upon the top of the camera, contains the clean film, while the other,
B, which is placed beneath the objective, receives the strip after it
has been acted upon by the light. A train of toothed wheels, C (Fig.
2), actuates the roller of this second magazine. This arrangement may,
moreover, be utilized also when projections are made, if one does not
desire the band to float in measure as it unwinds behind the
objective. As the upper magazine is entirely closed when it is placed
upon the apparatus, it is necessary, in order to prepare for taking a
negative, to pull out a few inches of the film, pass the latter over
the guide roller and fix the extremity to the winding roller in the
lower magazine.

It is clear that we can have any number of magazines whatever for
carrying about, all charged, just as one carries the frames of his
ordinary camera.

Chronophotography presents no more difficulty than ordinary
photography as regards the taking of negatives, and the amateur who