480 



SUMMARY OF OUEEENT RESEARCHES RELATING TO 



necessary manipulations at the length of the arm, and with a vertical Micro- 

 scope. Focusing, adjustment of illumination, &c., can be dune with the 

 hand without moving from the seat, and without having to leave the image. 

 This is accomplished by placing at the end of the tube of the camera a 

 plane silvered mirror at an angle of 45'^, which receives the rays from the 

 Microscope and deflects them into the camera. Any Microscope can be 

 used. 1 he stand has a bracket for an oxyhydrogen or electric lamp. 



Dr. A. Moitessier earlier described * a somewhat similar arrangement 

 which took the form shown in fig. 129. It has the side door for focusing 

 described in this Journal, 1886, p. 841. 



Fig. 130. 



Fig. 131. 



The latter form is also readily adapted for cases where small (fig. 130), 

 or very small (fig. 131), enlargements (3-5) ftro rcquired.f In the latter 



Op. cit., p. 131. 



t Ibid., pp. 136 and 138. 



