Author's Preface 



The telcplwto pictures should not be held too close to 

 tJie eye. To get them into focus, so to speak, the reader 

 should Jiold them at arm s lengtli. 



***** 



Conspicuous among those to whom I owe grateful 

 acknowledgments for encouragement and assistance in 

 connection with my work are the following : Duke 

 Johann Albrecht of Mecklenburg ; the Duke of Ratibor ; 

 Prince Eulenberg ; Prince Franz Arenberg ; FYeiherr 

 von Richthofen ; Dr. Stiibel ; Count Gotzen ; Herr von 

 Soden ; Freiherr von Yarnbiiler, Count von Hohenthal 

 und Bergen ; Freiherr von Reischach ; Herr von Plato ; 

 Count Bylandt-Rhendt ; my uncle Field-Marshal Ritter 

 von Keil ; Dr. Moebius ; Dr. Thiel ; Major Thiel ; 

 Professor Lampert ; Professor von Steindachner ; Hon. 

 Walter Rothschild ; Dr. E. Hartert ; Dr. Ritter Lorenz 

 von Liburnau ; Professor Yolkens ; Professor Tornier ; 

 Dr. Griinfeld ; Professor L. C. Neumann-Toulouse ; and 

 Herr Oscar Neumann. 



Dr. A. Reichenow and Professor Matschie have 

 supported me in the kindest and most friendly way for 

 years past, and I must single them out for special thanks. 

 Herr Goerz has also been intimately connected with my 

 enterprise through his generosity in giving me facilities 

 for perfecting my photographic equipment in his optical 

 establishment. I am indebted also in an extreme degree 

 to my friends Herr Henry Suermondt, Dr. Ludwig 

 Heck, Dr. Kiinstler (who went through some bad times 

 with me on my expeditions), and, finally, Captain Merker, 

 who furthered my plans and assisted me in every way. 



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