Author's Prcfcicc -»; 



'J he /c/c/if/o/o f^ui lives shall III not he held loo close la 

 Ihe eye. To v,el ihei/i iiilo foeiis, so lo s/^eah, Ihe reader 

 shoii/d hold Iheiii al cirm s lem^lh. 



■h- * * * * 



Conspicuous anionu^ th()S{! to whom I owe u;rat<-lul 

 ackiKnvlcdL^niL'iUs tor (^ncoura^cincnl and assislaiu (^ in 

 connection with my work arc! thc-" lollowiiiL;" : I )uke 

 [oliami y\ll)rcchl ot MccklcnljurL;' ; the I )uk(; of l\aiiljor ; 

 Prnice kailcnlxr^ ; Prince I'ran/ Arcnljcri^ ; I'rcihcrr 

 von Richthotcn ; 1 )r. Staled; Count (j()t/.cn; IIcit \-on 

 Sodcn; I'rcihcrr \'on \'arnl)ulcr. Count xon llohdithal 

 imd Dcr^cn ; I'rcihcrr xon Ixcischach ; llcrr \(in Plato; 

 Count 1>) landt- Khcndt ; my uncle P ield-Marshal Ritter 

 von l\eil ; 1 )r. MocPius; Dr. 'I hid ; Major Ihicl ; 

 Prolessor l.am|)ert; Pi'olessor von Sicmdachncr ; lion. 

 Walter koihschild ; I )r. IC Ilarlert; Mr. Pitler Porenz 

 \'()n JaPurnau; Prolessor \ OIkens ; Prolosor 1 ornier ; 

 I )r. ( d imleld ; i'rofcssor L. C. Neumann-'l (nilouse ; and 

 I P'l'r ( )scar Neumann. 



Dr. A. Peiclicnow and i'rofcssor i\Pitschi(! have 

 su|)|)orted m<: in the kindest and most Iriendly wa}- lor 

 yeai"s past, and I must single them out tor special thanks. 

 Herr ( ioerz has also keen inlimatcK' conn('ctc(l w a h my 

 enter|)rise thnju^h his ^cmerosity in ^iviiiL;' me lacililies 

 lor pciiectiiiLj mv photoLjraphic (!(|uipm<'nt m his optical 

 estaPlishnu lit. I .\\\\ indcPlcd also in an extreme dcLiTce 

 to m\ friends IPrr lleiir\ .Suermondi, \)v. Pudwij^ 

 Meek, I )r. Kmistler (who went dn'ouL;h some Pail tiiiU'S 

 with me (111 in\- expeditions), and, lm,ill\-, < aplain Merker, 

 who lurlhered m\ plans and assisted me in every way. 



