i86 PICTURING MIRACLES 



dissolve it. This act of expectoration is very hard 

 to picture sharply it is done so rapidly and without 

 visible warning. 



The fly's body and legs are covered with hairlike 

 bristles, making it easy and natural for him to carry 

 dirt and germs. It is almost impossible, even if it 

 were a clean insect, not to do so, and under the 

 microscope, masses of filth are visible on the hairs 

 and feet. 



I wanted a panorama of a fly's leg, which is nat- 

 urally very crooked and about 3/ & f an i nc ^ l n g- 

 The proximal part corresponding to our thigh just 

 filled the field of the camera and the hind joints of 

 the leg did also, leaving the foot in the center. 



A microscopic panorama is impossible to make 

 smoothly by hand, so I rigged a large pulley on the 

 mechanical stage adjusting bar and with a separate 

 motor reduction gear I timed the panorama part to 

 take the same time as the other motor gear running 

 the camera took to give thirty-five feet of film. 



The result was a perfectly smooth panorama in 

 which the leg seems to stretch out endlessly. It took 

 most of a day to get everything working right, each 

 timed to synchronize with the other and then some 

 twelve minutes to take the picture. 



The next step was to revolve the leg and foot 



