74 Gait of the American Trotter and Pacer 



and adding these averages by the simple rule of algebra, heretofore 

 given, we get the results shown in footings, which mean, briefly stated, 

 that hind feet exceed average slightly as compared with fore feet. 

 This seems to prove again that there was momentarily an increase of 

 speed during trial, which is always caused first by slightly greater hind 

 extension. 



Right here I beg to say a few words to the reader who may have 

 found these minute details rather difficult or too abstruse for practical 

 purposes. I simply desire now to demonstrate my investigation as 

 fully as is possible for me to do, but will also assure the reader that 

 for practical purposes there will appear in Chapter X only the main 

 and most important features of such measurements, from which may 

 be got a tolerably fair, if not thorough, understanding of the subject's 

 gait. 



We can now consider the extension of each leg or foot with ref- 

 erence to its opposite mate as shown in table Fig. 55. We must re- 

 member that in order to establish a conformity of results we should 

 start with calculations of measurements from off to near side on the 

 third line of table Fig. 53, using the first three figures only with ref- 

 erence to the line showing the first stride. In Fig. 55 there are given 

 the extensions, as measured from one hind to the other and from one 

 fore to the other, as follows : 



^S 9-55 = 9-6> 28.90 - 19.15 = 9.75, etc. ; and 24 15.05 

 = 8-95, 34 24 = 10, etc., to the end. (See Fig. 53.) 



Adding the four columns thus found and dividing each result by 

 the number of strides, or 15, we obtain the average of extension of 

 each leg with reference to its opposite member or mate. There is a 

 difference of extension between the hind of 0.44 ft. and between the 

 fore of 0.34 ft., but these differences must be divided by 2, being the 

 differences of two averages, in order to ascertain the actual mean dif- 

 ference between the extension of hind and fore. 



Hence we find that off hind precedes near hind by 0.22 ft., or 0.22 

 X 12 = 2.64 inches, and that off fore precedes near fore by 0.17, or 

 0.17 X 12 = 2.04 inches. This shows in all a greater extension for 

 the whole off side and illustrates my previous remark about the prefer- 



