£54 A mode of taking Stereoscopic [no. 4, new seriks, 



the form re- 

 presented in 

 Figfl, A. and 

 D. the Lenses 

 being merely 

 fitted into the 

 shifter E. as in 

 the accom- 

 panying figure 

 so as to ren- 

 der it unneces- 

 sary to injure 

 the Original 

 Camera by re- 

 moving * the 

 screw ring. 



In taking a 

 picture, the 

 lensbeing at 1 

 Fig. A ,the ex- 

 posure for the 

 first picture is 

 made in that 

 position, the 

 lens is then 

 closed and 

 shifted to 2, 

 the exposure 

 made and the 

 pictures are 

 completed. 

 After printing 

 however, the 

 pictures are in 

 their wrong 

 position and 



Slider half size. require to be 





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>V P o 









All parts of slider and front of Camera sliould be carefully 

 blacked, the slider sliould move freely between the partitions, 

 Which should not however be too far spent so as to admit light. 



P position of Pivot for stereoscope pictures. 



A do. for single pictures. 



