viii 
PEEFACE. 
In conclusion, I desire to ho allowed here to express my thanks 
to my father, who was my trusty companion on the weary voyage, 
and my scientific associate, and to my brother. Professor Perd. Keller, 
the historic painter, whose tasteful counsel respecting the illustrations 
has proved of so much value to me. 
FRANZ KELLER-LEUZINGER 
OAHLRItTinE, 
Jimwtrt/, 1874 
Note to the tiemnd Eiuilkh Edition . — In tlie present edition tlie foreign measurements 
iiavG been reduced to English, and the translation revised througliout, by 
Mr. II. W. Bates, Assistant Soorotnry of the Royal Geographical Society. 
