It often happens that the negatives which are employed for printing on these papers are far too dense in certain portions to yield good prints. For instance, it is very often the case that a full exposure has been made on a landscape with a cloud-covered sky, and that when the development is complete, the clouds have been buried. No possibility exists of properly printing the clouds and the landscape at the same time by straight methods. Gaslight papers are especially adapted for dodging, however. By masking the foreground, the clouds may be printed out, and then enough exposure given to the whole negative to print the landscape.
The usual method is to take a piece of cardboard cut roughly to the shape of the sky line. This is placed on the front of the printing frame and the exposure made to bring out the clouds, moving the frame continually in front of the source of light, so that no sharp line of demarcation appears. The space between the card and the negative assists in this vignetting. The card is now removed, and the exposure for the landscape given. If the handling of the card is skilfully done, the. result will be very much better than a straight print from the negative. Very often it is not necessary to use the card. If the negative is inclined away from the light, and the dense portion brought very close to it, this part will receive a proportionately much greater exposure, and some very difficult negatives may be made to give perfectly satisfactory prints.
In the usual way of drying prints, they roll up and remain obstinately curled when dry. It is not possible to dry them face down, for they stick to the support and are spoiled; but if they are turned over when about half dry, the curling will be minimized. The dry prints may be flattened perfectly by drawing them under the edge of a somewhat blunt ruler two or three times in different directions.-" Photo Era."
No square peg was ever a success at filling a round hole. If you are a misfit, whittle off the corners, or find a square hole.