:^OTE. 



It is fitting that a few words should be said here in regard to 

 the connection of the University with this work, and the motives 

 which led its authorities to assume the supervision of it. 



The function of a university is not limited to the mere instruc- 

 tion of students. Researches and original investigations con- 

 ducted by the mature scholars composing its faculties are an 

 important part of its work, and in a larger conception of its duty 

 should be included the aid which it can extend to investigators 

 engaged in researches too costly or elaborate to be accomplished 

 by private means. 



When ample provision is made in these several directions we 

 shall have the university adequately equipped and prepared to 

 exert fully her great function as a discoverer and teacher of truth. 



This book is the result of an unusually elaborate investigation 

 thus conducted during the past four years under the auspices of 

 the University of Pennsylvania. In 1883 it was found that Mr. 

 E. Muybridge, who was the first successfully to apply instantane- 

 ous photography to the study of Animal Motion, had long cher- 

 ished the desire of making a new and greatly extended study of 

 the subject, but had been deterred by the want of means. An 

 extensive photographic plant, elaborate electrical and mechanical 

 apparatus, access to typical animals of many kinds, much space for 

 the erection of laboratories, and a large fund for current expenses 

 were needed. 



It was represented to the Trustees of the University that sev- 

 eral individuals, appreciating the importance of the proposed 

 work to art and science, would unite in guaranteeing all expenses 

 connected with the investigation if a University Commission should 



