82 



MATERIALS FOR A MEMOIR ON 



Figs. 7 and 8 closely resemble each other. They differ in the 

 degree of outward rotation of the left hind leg. It is wider in 

 Fig. 8 than Fig. 7, and is rotated farther outward. The head in 

 Fig. 8 is nearer the beam than in Fig. 7. For consideration of 

 the outward rotation, see p. 89. 



In the interval between Figs. 9 and 10 both the left hind and 



(Fig. 9 of series.) 



(Fig. 10 OF series.) 



'^iUaMV/40^ 



the right fore limb have left the perch and remain "off" through 

 the remaining Figs. 11 and 12. 



In Figs. 10, 11, and 12 the manner in which the support is 

 maintained while the two limbs are "off" is illustrated. It is 



