438 PHYSIOLOGY CHAP. 



ments and the thrusts in the water with the limbs of the healthy- 

 side are more vigorous and energetic than those on the operated 

 side. 



The animal gradually learns to make more and more successful 



Fio. 232. Tracings of footprints during ordinary progression. From live normal dogs. (Luciani.) 

 The prints of the fore-legs are represented by small circles, those of the hind-legs by triangles. 

 The prints of the left leg are distinguished from those of the right by a black dot in the centre 

 of the circles and triangles. The traces of the right and left feet are united, respectively, by 

 lines. Each 25 mm. corresponds to 1 m. 1, Shows the elegant gait of a young poodle ; 2, the 

 clumsy gait of a bitch weighing 6000 grms. ; 3, a young dog weighing 2700 grms. ; 4, a young 

 dog of 2980 grms. ; 5, the reeling gait of a bitch weighing 5400 grms., which was completely 

 blind owing to enucleation of the eyeballs. 



efforts at standing upright and walking, till at last it succeeds. 

 At first it falls constantly to the side of the operation, owing to 

 the giving way of the limbs on that side and consequent loss of 



