INTRODUCTORY. 5 
theodolite, sextant, and artificial horizon, boiling-point ther- 
mometers, aneroids, and prismatic compasses. 
Much interest was expressed in London in my expe- 
dition, and my friends endeavored to give me their encour- 
agement in every way; but at the same time it was the 
universal opinion, both in London and Aden, that it would 
be impossible to enter the Galla countries, let alone to 
reach Lake Rudolf, withless than two or three hundred 
well-drilled followers. The expression of such opinions 
served, however, only to increase the zeal I felt in the 
enterprise. 
