534 



THE EXTERIOR OF THE HORSE. 



The conclusions which we have just drawn from the tracings of M. 

 Marey are in accord with the facts observed by all authors, ancient and 

 modern. We must, however, confess that they are slightly erroneous 

 in that which concerns the number of bases which support the body 

 successively during the accomplishment of a complete step. . 



By viewing the horse obliquely in front or behind, when the gait is 

 slow, it is not very difficult to ascertain for ourselves that the body is 

 not exclusively sustained by diagonal or lateral bases. 



At certain moments there appear tripedal supplementary bases, 

 recognized by our distinguished colleague, M. Che'nier, 1 and before 

 him by M. Lenoble du Teil, 2 who described in the marched gaits the 

 remarkable periods of exchange of contact, a statement identical to that 

 recently made by Messrs. Marey and Pages, 3 when they spoke of the 

 period of double contact recognized by them in these same gaits. 



A horse which ascends a hill, pulls a heavy load, or walks slowly, 

 shows tripedal bases very plainly. 



The instantaneous photographs, notably those of M. Ottomar An- 

 schiitz, of Lissa, attest this in a forcible manner. Figs. 225, 226 r 



Jj Ha Ml M IB BSI I __ *_ ~~] 



ESii isai ESS r ksi^ii^taai^i 



FIG. 225. The walk : posterior right tripedal 



contact, 



(From the instantaneous photographs of 

 ' i.) 





FIG. 226. The walk : lateral right contact. 



(From the instantaneous photographs 



of Lissa.) 



227, ana 228, reproduced from these photographs, explain the succession 

 of the diverse bases which appear in the course of a semi-step, and 

 which are repeated in the same order in the other moiety of the stride. 

 The tripedal bases of support there are evident. 



1 G. Chenier, Analyse du present ouvrage, in Echo des Socie~tes et associations veterinaires, 

 annee 1884. 



2 Lenoble du Teil, Etude sur la locomotion de 1'homme et des quadrupedes en g6n6ral, p. 

 14, Paris, 1887 



8 Marey et Pages, Comptes-Rendus de 1'Acade'mie des sciences, 18 Juillet, 1887. 



