PREFACE. SVll. 



The subject of my experiment is nine years old, and 

 when I purchased him, rather more than two years ago, he 

 had long, contracted feet, as may be seen by referring to 

 Fio'. 1. of the accompanying plates, which is traced from a 

 drawino- of his off" fore foot, made, soon after he came into 

 my possession : if this be compared with Fig. 3, it will be 

 at once seen, that a considerable change has taken place in 

 the form of the foot in the course of the last two years 

 particularly at the quarters and heels. The drawings were 

 both made under similar circumstances, that is with the foot 

 on the ground, and the weight thrown upon it. It will be 

 observed, that I was enabled in Fig. 1 in consequence of the 

 shrunk state of the bulbs of the heels at that time to pass 

 my pencil quite round them ; but in drawing Fig. 3 I was 

 obliged to stop the pencil, when I came to them, finding it 

 impossible from their increased plumpness to arrive at any 

 approach to a correct outline upon the paper. Our prin- 

 cipal concern however at present is a comparison of the foot 

 up, Fig, 2, with the foot down. Fig. 3, m order to ascer- 

 tain, whether they present any difference in their relative 

 breadth. To facilitate this comparison, I have drawn lines 

 across both feet at intervals of half an inch, and have 

 recorded the measurement upon each line in inches and six- 

 teenths of an inch ; and, I take it, it Avill be found upon 



making the comparison, that there is a very decided difference, 

 c 



