PREFACE. ix 



My thanks are due to Mr. Charles Whymper and to 

 Mr. Halls, the gentlemen who, from my crude water- 

 colour sketches, have been able to evolve such artistic 

 illustrations. My misleading brush must be entirely 

 responsible for any inaccuracies which may become visible 

 therein. 



To Messrs. Walker and Boutall I am much indebted for 

 reproducing the artists' pictures and my photographs so 

 true to the originals. 



ARTHUR POLLOCK. 



22nd September, 1894. 



