PREFACE. IX 



half-dozen negatives in which the horse is shown 

 in a position that explains the movement, and but 

 two of these were clear enough for reproduction. 

 At my request, Mr. Oscar Fritz, an excellent 

 horseman, rode his bay Arab before the camera 

 while I gave the signal to the photographer for 

 the exposure of the plate. In this manner I 

 obtained the line example that I have retained. 

 I rode 'Coquette' and ' Silvana ' before the 

 camera in the gallop-changes, and obtained a few 

 negatives in which the movement was caught, but 

 none of them proved suitable for reproduction by 

 the process we have used. 



The conditions necessary for obtaining good 

 negatives of moving horses are so peculiar that 

 some of the animals I had carefully trained for 

 the purpose never appeared before the camera, 

 and from other horses I never procured a satis- 

 factory negative. During the preparation of this 

 work I was often travellinsf at the season best 

 suited for photographing, and I did not always 

 have my horses at hand when the weather was 

 propitious. The pictures of 'Alidor' were taken 

 at the base of Castle Hill, In Edinburgh ; those 

 of ' Coquette ' were taken in Stuttgart ; those of 

 ' Silvana ' w^ere taken In Berlin, and upon the 

 fields about Dresden. 



