When your printer is busy and finds it necessary to stop his work to cut an odd sized mask, time is wasted if you have not supplied him with Mask Charts to make the work easy. The dimensions are accurately printed on these Charts, so that it is only necessary to follow the lines with a sharp knife to make any Mask within the dimensions of the Chart used. The 5x7 Eastman Mask Charts are 10 cents, the 8 x 10, 15 cents and the 11 x 14, 30 cents per dozen.

Pyro stains may readily be removed from the fingers and nails even though they are of long standing.

Dissolve one-third of an ounce of potassium permanganate in eightouncesof water. The fingers and nails should be rubbed well with this solution which will stain them a deep rich brown. Then rub them thoroughly with a saturated solution of potassium metabisulphite and both the Pyro and permanganate stains will be removed. The hands should be well rinsed afterwards.

To remove stains under the nails the two solutions should be applied with a brush. We know of no ill effects resulting from the proper use of the above remedy.

Solving An Old Winter Problem

Nearly every winter a number of professionals complain of lack of body in their negatives. They blame the plates or the developer, but the whole trouble, in nine cases out of ten, is that they have not dropped into the regular swing of their winter work.

As the days shorten, there is a general yellowing of the light. If the operator goes on giving summer exposures, after the light has lost so much of its actinic power, his negatives are certain to be under-exposed. The obvious remedy is to give longer exposures.

Even when the exposures are correct, there is too often underdevelopment. If the professional does nothing to raise the temperature of his developing solutions in the winter, what can he expect but under-developed negatives? Every developing solution loses its power rapidly as its temperature falls, and a very cold developer can scarcely be called a developer at all. The temperature should never be below 65° - and the photographer who warms his solution up to this point and keeps it there will have no reason to complain of weak negatives.

Good, strong, plucky negatives, with plenty of gradation and body in them, can be secured in winter as well as in summer by increased exposures and by raising the temperature of the developing solution.