In offering this lamp to his boy readers, the writer knows they will find it most satisfactory and a solution to the problem of making a perfect dark-lantern. The air admitted through the holes in the bottom of the box carries the heat and smoke straight into the chimney, and out through the space between the tin cans, making it impossible for the flame to ignite the wood.
If you use
A Plate-lifter you will find an old tooth-brush handle tapered at the end by means of a file one of the best that can be had.
It is well to have some scheme for
Classifying and Preserving Negatives.—To keep them in their original boxes is not a good idea, as there is always danger of scratching them and no satisfactory way of keeping track of their description, date of exposure, etc.
Manila Envelopes, with a printed form to be filled out, on the outside, are invaluable holders, as they not only make it possible to file away negatives in alphabetical order, but preserve them from dust, scratches, etc.
Fig. 178.—A Negative-case.
The four-by-five size can be bought for about twenty-five cents a hundred from a dealer in photograph supplies; but you can get them much cheaper by going to a paper house and asking for their four-by-five coin-cut manila envelope, which sells in half-thousand lots at about one dollar per thousand. If the quantity is more than you will need, you can probably dispose of a portion of them to your boy friends. With a printing-press or rubber type, the following form should be printed upon the outside, with a rule or space to the right in which to place the descriptions:—