In the Heart of Africa 
156 
V nameless, volcanic cone in October, 1907, being the first Euro¬ 
peans to do so, and definitely determined its position carto- 
graphically, we christened, it, in honour of his Highness, the 
Adolf Friedrich Peak. The cone itself is formed of quite loose 
eruptive material, innumerable heaps of scoria which had massed 
themselves over one another. There is no crater perceptible. 
The point of egress of the lava stream, the eruptive flue, is buried 
under the mighty masses of ashes and thus remains invisible. 
The cone, however, is traversed in parts by cracks and rifts 
which steam vigorously and on the edges of which the 
scoria are coloured in hues varying from sulphur-yellow to dark 
red-brown. It is not requisite to be endowed with the delicate 
sense of smell of a chemist to recognise the gases which issue 
from the depths. The prickling smell of sulphurous acids, with 
which in places muriatic acid fumes are mingled, may be detected 
for miles around. Sulphuretted hydrogen and carbonic acid gas 
also play a prominent part. 
“A second and smaller volcanic cone of the same type as 
the Adolf Friedrich was formed in the autumn of 1905, to 
the east of Namlagira. The natives called it Kana* maharage^ 
which means ‘ the master who loves beans.’ This was the name 
given by the natives to Lieutenant Pfeiffer when living, who 
came to grief whilst elephant-hunting, and whose spirit they 
believed to have flown into the hill which had suddenly risen up 
from the level ground to an accompaniment of fire and thunder. 
Like the Adolf Friedrich, the Kana maharage cone consists 
mainly of loose volcanic scoria, and differs only from the first- 
named in that it possesses a visible summit crater, with a diameter 
of about seventy-five metres at the top. When I visited the 
Kana maharage in December, 1907, my attention was attracted 
by a large number of places on the surface of the lava stream, 
in the near vicinity of the cone, which smoked in parts and were 
multifariously coloured, chalky-white, brick-red, dark-brown. 
The impression given was that a person had got hold of an in¬ 
exhaustible paint-box and casually daubed the greyish-black 
♦ Kana, incorrect Wanjaruanda pronunciation of hana (“master”). 
