viii PREFACE. 



cellent teaching the photographs are really due ; 

 and I have also to thank the London Stereoscopic 

 Company, Messrs. Gunn and Stuart, Mr. Percy 

 B. Highley, and Mr. B. F. Anderson for the pre- 

 paration of prints and drawings from materials so 

 bad that the results are sufficiently astonishing to 

 myself. The conditions under which my photo- 

 graphs were taken scarcely gave them a fair 

 chance. The original negatives have not been in 

 any way interfered with ; although it would have 

 in many cases been easy to make an infinitely 

 more attractive picture by touching up and re- 

 drawing, it seemed to me preferable to reproduce 

 the picture as it appeared. 



Dr. Mill and Dr. Gunther have most kindly 

 permitted me to make use of the plates reproduced 

 in Figs. 31 and 12, and I have to express my 

 thanks to them, as well as to the publishers. 



I have also to thank Mr. Coles for the instruc- 

 tion which has resulted in the map now produced 

 for the first time. The Royal Geographical Society 

 yery kindly prepared a map from my materials for 

 cheir October Journal. T could not utilise this 

 map for my own work, as several inaccuracies were 

 retained in deference to a more recognised au- 

 thority than myself. I have therefore had a new 

 map produced, in which some of these are cor- 

 rected for the first time, though unfortunately in a 

 very hurried manner. 



o .]•'. seo'rr ELLIOT. 



