American Big-Game Hunting 



purpose in view. For my lens I used a Dall- 

 meyer rapid rectilinear, whole-plate size. I 

 used only the back combination of the lens, 

 which gave a focal length of about twenty- 

 two inches. The lens was equipped with a 

 Prosch duplex shutter, which was, I found, 

 even when set for its lowest speed, too rapid 

 for my purpose. In determining upon a 

 camera, I had already arrived at the following 

 conclusions : the camera must be a hand 

 camera, equipped with a film-roll holder ; it 

 must be water-proof, light, not easily dam- 

 aged, and of small size — i. e., must make only 

 a small-sized negative ; focusing must be done 

 at the front by moving the lens. 



To obtain these conditions, I constructed 

 my first camera in the following manner: I 

 made a rectangular core of wood exactly 

 the shape I wished the inside of my camera 

 to be. The front end of this core was cylin- 

 drical. I then built up on this core of 

 wood a paper shell, using strong Manila 

 paper saturated with shellac as it was rolled 

 upon the core. This was then wound with a 

 strong cord at intervals of about one half 

 inch, in order to provide cell spaces and conse- 

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