12 Z00PRAX0ORAPH7 



graphing birds and horses, and also wild animals when 

 possible to do so. 



L. A lateral battery of 24 automatic electro-photo- 

 graphic cameras, arranged parallel with the line of 

 progressive motion, and usually placed therefrom about 

 15 metres or 49 feet. 



Slow movements are usually photographed with 

 lenses of 3 inches diameter and 15 inches equivalent 

 focus; the centres of the lenses being 15 centimetres, 

 or about 6 inches, apart. 



Rapid movements are usually photographed with a 

 po'rtable battery of cameras and smaller lenses. 



The centre, between lenses 6 and 7, is opposite the 

 centre of the track T. 



For illustrations comprising both ' ' Laterals ' ' and 

 ''Foreshortenings," cameras 1 to 12 only are used. 



When '' Laterals " alone are required, cameras 13 

 to 24 are connected with the system and used in their 

 regular sequence. 



R. A portable battery of 12 automatic electro-pho; 

 tographic cameras, the lenses of which are IJ inches 

 diameter and 5 inches equivalent focus; the lenses are 

 arranged TJ centimetres, or about 3 inches, from their 

 centres. When the battery is used vertically, lens 6 

 is usually on the same horizontal plane as the lenses of 

 the lateral battery. 



In the diagram this battery is arranged vertically 

 for a series of "Rear Foreshortenings, " the points of 

 view being: at an an^le of 90 deo^rees from the lateral 

 battery. 



F. A battery of 12 automatic electro-photographic 

 cameras, similar to that placed at R, arranged horizon- 



