to contain innumerable
notes on the habits of animals, birds, and fishes, many of them
probably new species, and on phenomena in every direction which the
keen eye searched out as the great traveller moved amongst some of the
grandest scenes of this beautiful world: it may be doubted if ever eye
so keen was backed by so much perseverance to shield it from a mere
superficial habit of noticing. Let his adventures speak for
themselves.

Amongst the greatest facts recorded here the Geographer will perceive
that the Doctor has placed it beyond doubt that Lake Nyassa belongs to
a totally distinct system of waters to that which holds Lake
Tanganyika, and the rivers running north and west. He was too
sagacious to venture the surmise that Tanganyika has a subterranean
outlet without having duly weighed the probabilities in the scale with
his elaborate observations: the idea gathers force when we remember
that in the case of limestone cliffs, water so often succeeds in
breaking bounds by boring through the solid rock. No more interesting
problem is left to solve, and we shall yet learn whether, through the
caverns of Western Kabogo, this Lake adds its waters to the vast
northerly flow of rivers we now read of for the first time, and which
are undoubtedly amongst the largest in the world.

I cannot close these remarks without stating how much obliged I am to
Mr. James Young, F.R.S., of Kelly, for having ensured the presence of
the Doctor's men, Chuma and Susi. Ever ready to serve his old friend
Livingstone, he took care that they should be at my elbow so long as I
required them to help me amidst the pile of MSS. and maps. Their
knowledge of the countries they travelled in is most remarkable, and
from constantly aiding their master by putting questions to the
natives respecting the course of rivers, &c., I found them actual
geographers of no mean attainments. In one instance, when in doubt
concerning a particular watershed, to my surprise Susi returned a few
hours afterwards with a plan of the whole system of rivers in the
region under examination, and I found his sketch tally well with the
Doctor's map. Known to me previously for years on the Zambesi and
Shire it was a pleasure to have them with me for four months. Amongst
other good services they have aided the artist by reproducing the
exact facsimile of the hut in which Dr. Livingstone expired, besides
making models of the "kitanda" on which he was carried, and of the
villag