404 



WORK OF THE PHYSIOLOGICAL STATION AT PARIS. 



In this representation of attitu<les the leg" is sui)posed to occupy snc- 

 cefssive planes superi»osed upon each other, so that the last image 

 covers partially those which precede it. The contours covered by the 

 following- image are rei)resented by dotted lines. 



Flo. 1.— Atlituilua and auccesaivu pusitiuus u!' the liuLt liiuil leg of n lior.sc during ;i step in walking. 



Kepeating this same operation for another species of animal, we 

 obtain (fig, "2) the series of attitudes of the hind leg of a dog walking, 

 and (fig. o) a similar series for a sheep. In these last two figures an 

 attempt has been made to represent by dotted lines the contours of the 



Fio. 2. — Attitudub and .successive po.sitions of the riglit bind leg <>i' a dug during a stop in walliing. 

 Tlio dotted lines nho^Y the ])Ositiou8 of the left hind leg. 



left hind leg, so as to show the alternation of movements between the 

 two legs. 



At the first glance it is seen that in different species of animals the 

 length of the step in relation to the height is very different. This ine- 

 quality is much greater in rapid gaits aud in certain animals of small 

 stature. 



