Experiments and their Verification 



135 



15.50 feet, it is evident that the right hind has the greater activity. In 

 fact, the record shows that left hind sank into ground and the toe- 

 mark indicated the disadvantage of such impression as against that of 

 the right hind, which was set down squarely and showed no effort at 

 toe. The 2 oz. extra weight may cause as it generally does that ac- 

 tivity, but the retarding effect of left hind checks the right fore and as 

 a result we have the average extension for 20 strides equally divided 

 in front, or for each fore 7.75 feet, as given in Fig. 100. And so the 

 increase of elevation of left hind by means of this Memphis shoe has 



Extensions of 

 Shoeing oFf/y.98. 



Extensions of 

 Shoeing of fig. 99 



n 



2 jo !n, 



Disl: of-nh = 3.S6M. 

 Di5t.nf-oh = 3.07ft 

 Diff. bet. pairs .+9 fh 



or 6. 88 in. 

 Average dish. ~ J. 32 &. 



Disl: nF -oh - 3.67ft. 



Disl-.oF - nh = !.62/>. 



J)lff . bet pairs * .OS ft. 



or. 6 in . 



Average disl~. - 3.65 ff. 



decreased its extension, while the right hind was aided in extension 

 not only by less elevation of action, but a heavier shoe as well. 



Taking the same conditions of fore, and changing hind shoes, as 

 given in Fig. 99, we bring about a sudden change behind, as given in 

 Fig. 101, namely, we find the left hind more extended over right hind 

 by 0.175 feet, or 2.10 inches, and we also find that right fore is now 

 more extended than left fore by 1.68 inch. Here, again, the heavier 

 shoe on left hind and the longer heel on off hind have shown their 

 effect in extension, the weight increasing same on left hind and the 

 longer heels on right hind decreasing it apparently; but in this case 



