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Typo: A Monthly Newspaper and Literary Review, Volume 1

(From the British and Colonial Printer and Stationer.)

(From the British and Colonial Printer and Stationer.)

Photographs on Leather.—A successful mode of taking photographs on leather has been patented by Herr Lewisohn, of Stuttgart. A coating of copal varnish is put upon the leather, and well dried; then a second coating is placed over it, composed of albumen and white lead. When this is dry the faced leather is ready for the silver bath, which forms the sensitive surface. The composition of the albumen and white lead varnish need not be very definite, so long as the stratum of lead deposited is thin and uniform. A little practical experience soon enables the operator to estimate the proportions to a nicety.

Olive Oil for Litho Rollers.—A lithographic printer, a practical man, writing in the Gutenberg Journal, states that, instead of preparing a new roller with strong varnish and block, as is done by many printers in France, he applies olive oil, rolling up in it until the leather, the flannel, and even the wood have imbibed as much as can be got into them; the surface is then scraped, and mordant and finally black applied. Scraping is done with a sharp knife in oblique streaks, first one way and then the opposite. The writer states that he has had in use for twenty-five years a roller prepared in this manner.