ENLARGING ON BROMIDE PAPER. 
147 
making negatives of such objects as are too large for a 
microscopical lens; we often use it for large sections 
which are to be enlarged only a few diameters. Till we 
adopted this device these large sections were a source 
of great trouble to us. The apparatus for low power 
Fig. 33- 
WOrk described on page 32 is even better adapted for 
enlarging on bromide paper than the camera shown 
here. 
For enlargement by artificial light we use what is 
practically an optical or “ magic ” lantern, with a four- 
inch condenser, and we project the image upon a 
sensitive surface—bromide paper, in place of the 
ordinary screen. But as the distance between lens and 
screen is not great, it is better to have the lantern and 
screen or easel fitted to a baseboard ; the easel should 
slide along this base, and should have up and down 
movement. The negative is placed in a “carrier” as 
usual, in the lantern, and the side movement is obtained 
by the use of this carrier. 
The operation is preferably carried on in the dark 
room, for this obviates the necessity for light-tight 
