362 IDEAL HOME LIFE
ruin the film for picture purposes, but it will save some future exposures by your knowing what it is like. You will note that the film, a milky, yellowish strip of celluloid, is shiny on one side and dull on the other. The shiny side is next the protecting strip of red and black paper which extends beyond it on either end. You will see that only the first end is fastened down and that the last end is loose, but provided with a paster ready to fasten. You will note numbers in black on the back of the protecting paper, and before the first of these is a little black hand. Now roll up the film again, and insert in the camera according to the directions for the particular style of instrument you have. As you know that when unrolled the spool presents a film on one side and a strip of paper on the other, and you presumably have guessed that it is the film and not the paper on which the picture is made, you can appreciate the importance of getting the spool into the camera right side up, or so that the film will be turned inward and toward the lens.
The purpose of these numbers is to tell you how far to wind the film between each picture. After one picture is made, another picture must not be made on that same strip of film, otherwise there would be what is called a double exposure, and the result would be only blur and confusion. So the film is wound off its original spool on to the other, or take-up spool, and the amount of winding to be done is shown by the periodical appearance of the little black numbers opposite the little ruby window. Also, they indicate the number of pictures already made, and consequently the number which can yet be made upon the spool of film.
Care of Film
In making pictures in the field, after the last number has been wound past the window, keep on turning the key until it will turn no more, or until enough turns have been made to insure all the protecting paper having been wound off the