PREFACE. 



In the summer of 1892 while the Author was in 

 California, preparing for a Lecturing tour through 

 Australia and India, he received an invitation from the 

 Fine Arts Commission of the World's Columbian Ex- 

 position to give a series of Lectures on Zoopraxog- 

 RAPHY in association with the Exposition now being 

 held in Chicago. 



As these Lectures under the more familiar title of 

 " The Science of Animal Locomotion in Its Relation 

 to Design in Art ' ' had already been given at nearly all 

 the principal Institutions of Art, Science and Education 

 in Europe and in the United States, (see appendix A) 

 the Author was induced to believe that they might be 

 repeated in a popular manner at the Exposition, with 



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