72 materials for a memoir on 



An Analysis of the Movements of the Raccoon, the 

 Baboon, and the Sloth. 



Ih addition to the general remarks on animal movement and 

 the analysis of separate phases of the limb positions, it has been 

 thought advisable to describe a few forms in detail. 



With this object in view, figures of the raccoon (series 744), 

 the baboon (series 747), and the sloth (series 750) are herewith 

 presented. 



The Raccoon. (Series 744.) 



The raccoon (Procyon) has been accepted as a form worthy of 

 careful analysis, since the genus is one of the most ancient of the 

 extant Carnivora, and presents in its gait opportunity for ascertain- 

 ing the manner in which a primitive flesh-eater moved when of 

 small size and of short limb. (See p. 38.) 



The gait from Fig. 1 to Fig. 4 is in diagonal heterochiry. In 

 Fig. 1 the right fore foot lingers so long on the ground that the 

 left hind foot is about to come '' on" also. The right hind foot is 

 about leaving, and the fifth toe projects backward. (See p. 51.) 



(Fig. 2 of series. 



In Fig. 2 the right fore foot remains on the ground, the left hind 

 foot now reaches the ground at its side, and the right hind foot is 

 " off." The position is retained in Figs. 3, 4, and 5. 



In Figs. 5, 6, 7 the gait is left lateral heterochiry, the support 

 beinof on the left legs, the fore limb beino; in forward movement 

 and the hind limb being in backward movement. Fig. 8 is a 

 transitional form (the animal movement only resting on three 

 legs) back to the diagonal heterochiry, as seen in Fig. 9, which 

 retains the combination in one picture only, to be again in right 



