188 



PHOTOMICROGRAPHY 



of Messrs. Pathe an example of these films is given on 

 Plate 38 ; by their projection on a screen a most wonder- 

 ful reproduction of the original object as seen under the 

 microscope is produced. The movements of larger 

 organisms, etc., can be displayed equally well by this or 

 the ordinary methods of illumination, and in many cases 

 the radiant need not be so intense as is necessary for 

 bacteria. For a serial photograph intended for display in 

 a cinematograph at the actual rate of movement of the 

 object, 16 exposures a second should be made, each with a 



Fig. 60 



EKNEM ANN'S CINEMA.TOMICHOGUAPHIC APPARATUS 



