Marion and Co., compiler · London : Marion and Co. · leaf 138
RAPHY. SO that such a frame serves for one size of negative only. Here, on the other hand, we have one of the better class of frames, such as is used for printing large negatives. There is in it a piece of plate-glass, against which the negative is placed. By this device all danger of breakage is… … photographer should have several by him for such small plates as he works. The porcelain dishes are much the same as we have already been using for development. They have the advantage over black-coloured dishes that it is easier to see when they are thoroughly clean, and it must be under- stood…
