188 



DENJ. PIKE S, JR., DESCRIPTIVE CATALOGUE. 



prints on the bottom of the box, and viewing them reflected 

 by the mirror through the lens. 



Price, $8.00; extra large size, $12.00. 



Fig. 704. 



Fig. 705. 



Daguerreotype Camera. The camera obscura, used for 

 taking daguerreotype pictures (Fig. 704), consists of a ma- 

 hogany box, on the front of which is fixed a brass sliding 

 tube, A, containing two achromatic lenses. The image is 

 received on a piece of ground glass, fitted in a frame, B, 

 which slides in a groove in the back of the camera, and the 

 focus is adjusted to the greatest nicety by a fine rack- work 

 movement in the brass tube containing the lenses. The frame, 

 B, may be withdrawn, and an- 

 other frame, C (represented in 

 Fig. 705), introduced, consisting 

 of a box, made to receive thin 

 wooden frames, which are 

 grooved around and adapted 

 for receiving the various sized 

 daguerreotype plates to be used. 

 This frame is furnished with a 

 sliding shutter, D, in front of 

 the plate to prevent the ac- 

 cess of light to the plate till 

 placed in the camera. E is a 

 hinged flap with ,spring to keep 

 the frame and plate in their 

 proper position. 



