CAMERA AND PHOTOGRAPHIC APPLIANCES 23 



doing will not occur, perhaps, in a hundred 

 or more exposures, it is not worth while to 

 encumber one's self with an otherwise inferior 

 form of camera in order to provide for the in- 

 frequent requirement. An excellent method is 

 to attach the camera to a stout board fastened 

 vertically to one end of a heavy table, placing 

 the microscope beneath it on a lower support, 

 large enough to carry a lamp as well. The 

 light is to be reflected upward by the mirror, 

 as is usual when using the microscope in up- 

 right position. Diffused daylight may be em- 

 ployed for this manner of working as well as 

 that from a lamp or other artificial radiant. 



Some twenty years ago, when no suitable 

 camera for photo-micrography could be found 

 at any dealer's, I devised a form which the 

 Scovill Manufacturing Company, of New York, 

 made for me in the most satisfactory manner, 

 and which is to-day, after constant use in all 

 these years, as good as when it left their 

 shop nay, better, in the smooth working of 

 its various parts. A careful study of the 

 illustration (Fig. 3) will serve to give a fair 

 idea of its special features. The bellows are 

 in two parts, with a central box serving the 

 double purpose of a support to prevent them 

 from sagging in the middle and carrying a 



