LIST OF ILLUSTRATIONS. 



xiii 



PAGE 



Fig. 16. — Muscles of tlie thigli in man 76 



Fig. 17.— Muscles of the thigh of the magot 77 



Fig. 18. —Muscles of the thigh of the coaita 78 



DETERMINATIONS. 



Fig. 8. — Two determinations of the speed of the muscular wave . 38 

 Fig. 10. — Determination of the speed of the nervous agent in man . 43 

 Fig. 12. — Measure of the time which elapses between the excitation 



of the electric nerve, and the discharge of the torpedo . 58 

 Fig. 82. — Determination of the direction of the movements in an 



insect's wing ........ 195 



Fig. 94. — Experiment to determine by the electric and myographic 

 methods at the same time, the frequency of the move- 

 ments of the bird's wing, and the relative duration of 



its elevation and depression 230 



Fig. 26. — Determination of the rapidity of walking at various 



instants, by means of a chronographic tuning-fork . 122 



NOTATIONS. 



Fig. 34. — Notation of a tracing of man's mode of walking . . 133 

 Fig. 35. — Synoptical notation of the four kinds of progression used 



by man 134 



Fig. 36. — Notations. of the gallop (man) 134 



Fig. 37. — (Upper line) notation of a series of jumps on two feet. 



(Lower line) notation of hops on right foot . . . 135 



Notations of the Paces of the Horse. 



Fig. 38. — Notation of a horse's amble 142 



Fig. 39. — Notation of the horse's walking pace 143 



Fig. 51. — Notation of the walking pace, with predominance of the 



lateral pressures . 160 



Fig. 45.— Graphic curves and notation of the horse's trot . . . 153 



Fig. 40. — Notation of a horse's trot 144 



Fig. 46.— Notation of the irregular trot 156 



Fig. 41. — Synoptical notations of the paces of the horse, according 

 to various writers. 

 No. 1. Amble, according to all writers. 



o ( Broken amble, according to Merche. 

 ^' * i High steps, according to Bouley. 



( Ordinary step of a pacing horse, according to Magure. 

 No. 3. < Broken amble, according to Bouley. 

 ( Traquenade, according to Lecoq. 



