io CONTENTS 



IX X-RAY MOTION PICTURES 141 



How the First Motion Camera Pictures 

 Were Made. 



X UNDER-SEA PHOTOGRAPHY 153 



What Is Required; Wonderful Experiences, 

 Dangers, Etc. 



XI MARINE LIFE 171 



The Urechis with Cell Division of Its Egg. 



XII A TRAVELING CAMERA 177 



What It Does. 



XIII THE FLY 181 



History, Structure, Etc., and Method of Pic- 

 turing It. 



XIV TECHNICOLOR AND OTHER METHODS 191 



Methods Described in Detail; Polarized 

 Light and Other Kinds. 



XV CHEMICAL FARMING 215 



Growing Plants without Soil or Cultivation, 

 with Instruction and Formula. 



