FOREWORD 



14, Carlton House Terrace, 



Pall Mall, 

 London, S.W. 



July 5, 1922. 

 DEAR MR. THORN, 



Thank you very much for your letter of the 

 29th ultimo, and I hasten to return to you the manuscript 

 that you so kindly left for me to look over. 



I have now gone over the largest part of it, and find 

 it not only most interesting but exceedingly instructive, 

 and I am sure that the knowledge it imparts would be 

 of the greatest value to those who break horses. 



Some of the theories are, of course, really acting on 

 the lines of Sample, whom I knew years ago, and 

 very valuable these theories are. I think the photo- 

 graphs you enclosed are splendid for illustrations. 



There are one or two points in the work on which 

 I rather differ, but they are so slight that I really think 



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