Bromide paper : instructions for contact printing and enlarging (1896)
Just, E. A · Bradford : P. Lund, Humphries · leaf 35
t 6s., and others more expensive in various sizes. They can be obtained to order with two or more burners imme- diately behind one another, and in this form, with three flames close together and parallel one behind the other, the albo-carbon light was strongly recommended for enlarging purposes by… … Fig. 7. When using it, some attention is required, but it effedfs a considerable saving in gas and gives a steady white flame of relatively great intensity. That the intensity of the albo-carbon gas flame not only refers to its optical brilliancy, but also to its chemical a(5finicity was proved by…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
