24 THE A B C OF PHOTO - MICROGRAPHY 



lens for making photo-macrographs, lantern 

 slides or enlargements on bromide paper. 

 This central box and the rear portion of the 

 camera, with the focusing screen, slide freely 

 and independently upon V-shaped ways, and 

 may be firmly fixed at any desired point a 

 necessary feature in making lantern slides or 

 bromide enlargements, the front being im- 

 movably attached to the camera-bed. The 

 distance from it to focusing screen with bel- 

 lows fully extended is about three feet, whilst 

 the addition of a second bellows (cone- 

 shaped), which receives the eyepiece of mi- 

 croscope, makes it possible to have the object 

 on stage of microscope fully five feet from 

 screen sufficient for almost any practical am- 

 plification. This cone bellows may be re- 

 moved by simply turning a button and 

 replaced by an ordinary lens board when it is 

 desired to use the camera for copying, and 

 the entire front can be shifted several inches 

 vertically or horizontally. The plate-holder is 

 single, the plate being inserted at the back, as 

 in the old style of wet holders. This form is 

 in every way superior to any of the double 

 holders, with the possible exception of the 

 English book form, and is especially adapted 

 to my method of backing plates to be de- 



