234 THE BOOK OF THE LANTERN. 



negative, on an enlarged positive on bromide paper. The 

 process depends upon the circumstance that the paper 

 remains sensitive to light, but in a diminished degree, 

 after the developing solution has been applied to it. Pro- 

 ceed as follows : Expose your landscape as usual, but stop 

 development before the required density is obtained, and 

 wash the paper. Now placing your cloud negative in the 

 lantern, pin up the paper once more, shielding the land- 

 scape portion by a piece of card kept in movement, and 

 give another exposure. Now re-develope to the right 

 density, and you will find that while the landscape gains 

 in strength the clouds will become faintly apparent. The 

 picture can then be fixed and finished according to the 

 directions given. 



If several copies of an enlargement are required, the 

 best method will be to make an enlarged negative on 

 paper, using a glass positive (an ordinary lantern slide) in 

 the lantern. The same operations as those just described 

 are necessary, but the exposure can with advantage be 

 increased. I should also recommend the use of alkaline 

 development, and I think that washing soda and pyro is 

 the best form of it for the purpose. The paper negative 

 when dry is rendered transparent by being passed through 

 a bath of melted paraffin wax. It can then be used in 

 an ordinary ' printing- frame to produce prints as may be 

 desired. 



Some time ago I published a new method of obtaining 

 enlarged negatives, which will' be useful to those who wish 

 to work with an ordinary lantern, and who are ready to 

 undertake the task of plate-making. 



