232 THE BOOK OF THE LANTERN. 



which I have referred to, but is using a mere board for the 

 purpose. 



The paper is supplied in cases, either in flat sheets, or 

 rolled with the sensitive surface inwards. A piece of the 

 required size is pinned on the focussing board ; and the 

 best way to do this is to pin the two upper corners 

 first, and to unfold the paper over the board, pinning it 

 down at the edges as required. Drawing-pins will do, but 

 ladies' bonnet pins are much more easily handled in the 

 semi-darkness of the room. Now uncover the lens for the 

 proper time, and be careful that the lantern is quite free 

 from vibration. If you wish the picture to be vignetted, 

 this is most easily managed during exposure. A piece of 

 brown paper, a foot square, is cut in the centre with an 

 oval opening, with a serrated edge. Hold this in front of 

 the lens, and keep it in gentle movement, so that the 

 pointed edges of the paper are always changing their places. 

 This will cause the edges of the picture to be ill-defined, 

 and a white margin will be left outside them. 



I need hardly point out that in enlarging by this method 

 the operator has a wonderful amount of controlling power 

 at his disposal, in bringing out certain parts of the picture 

 with extra density, and reducing those parts which may 

 require such treatment. Thus the distant portion of a 

 landscape may be lightened by a card moved with discre- 

 tion over that part of the image during exposure. If, too, 

 some point in the negative is of unusual density, it can 

 receive extra exposure by using a card with a hole in it, 

 in front of the easel. 



At the end of the exposure the lantern is capped, the 



