604 COMPARATIVE LOCOMOTION OP DIFFERENT ANIMALS. 



of the Avave, and widely sei»ai'ated on its convex .side. This implies 

 an absolute agreement between tlie number of undulations of the body 

 and the steps of the animal. 



It is easy to see from the examples just cited that chrono-photogra- 

 phy gives us vastly more information on the subject of animal locomo- 

 tion than we can gain by the closest observation, and that, thanks to 

 this method, we can, as previously said, compare the anatomical struc- 

 ture and the functional characters among the different species of ani- 

 mals. 



