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  2. Advertising

    {No abstract available}

    Advertising : 561 words
  3. RED CHALK BROMIDES.

    For the production of what is known as the "red-chalk" tone, the favourite formula has hitherto been one requiring in its make-up a large proportion of neutral potassium citrate, a chemical not ...

    Article : 529 words
  4. Photo Focus.

    A preparation which is said to form a very effective waterproof coating for wood is made by diluting Brunswick black with naphtha and adding thereto about one-tenth its bulk of ordinary rubber ...

    Article : 37 words
  5. WIPING THE LENS.

    Instead of wiping the leas with the handkerchief, or with the coarse fabric of the focussing cloth, it is better to keep a little piece of velvet for the purpose. A square of velvet about four inches each ...

    Article : 61 words
  6. CLEANING A LENS.

    It is a most important thing in photography to have a perfectly dust-free lens. Any particles of dust on the surface mean that the rays of light passing through the lens are interfered with. Many ...

    Article : 219 words
  7. PUBLICATIONS RECEIVED.

    "The Ruthleben Prison Camp." A Record of Nineteen Months' Internment. By Israel Cohen (late chairman of the Ruthleben Literary and Debating Society). With 26 illustrations and a ...

    Article : 262 words
  8. COPYING PRINTS.

    An even illumination is very important when copying prints in the camera, as any departre from this will serve to emphasise the grain of the paper, and the copy will look much coarser tin ...

    Article : 104 words
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