The Science of Photography

1901

As to the cause of the deterioration of gelatin and dry photographic plates W. G. Levison suggests that there is some emanation, probably Becquerel rays, from the pasteboard of the boxes in which the plates are packed for the market, which causes their deterioration. He found that if he cut a star from the pasteboard of a plate box and laid it on the sensitive side of a plate, the whole then being inclosed in a box for a week, when he developed the plate he obtained an image of the star.

An Adapter.

M. Guenault has devised an "adapter," which transforms the ordinary folding pocket kodak into a camera suitable for plates, as distinguished from pellicules. Full particulars can be had of the inventor, 22 Rue de Strasbourg, Nantes. It can, report says, be applied to the popular pocket kodak very easily, and renders it still more serviceable.

Secret of Color Photography.

The Bund, a leading Swiss paper, has a long article on the discovery of the secret of color photography by a Bern amateur, Adolphe Gartner. He has been working on the invention for several years, but by a happy accident a few days ago he discovered the secret, which consists chiefly in the bath process and is very simple.