ge of the whole, as is
said to be the case with five islands in Ukerewe; but even the largest
island, Chirubi, does not in the least dwarf the enormous mass of the
water of Bangweolo. A range of mountains, named Lokinga, extends from
the south-east to the south-west: some small burns come down from
them, but no river; this range joins the Kone, or Mokone range, west
of Katanga, from which on one side rises the Lufira, and on the other
the Liambai, or Zambesi. The river of Manda, called Matanga, is only a
departing and re-entering branch of the Lake, also the Luma and Loela
rivers--some thirty yards broad--have each to be examined as springs
on the south of the Lake.

_July 29th, 1868._--Not a single case of Derbyshire neck, or of
Elephantiasis, was observed anywhere near the Lake, consequently the
report we had of its extreme unhealthiness was erroneous: no muddy
banks did we see, but in the way to it we had to cross so many
sponges, or oozes, that the word _matope_, mud, was quite applicable;
and I suspect, if we had come earlier, that we should have experienced
great difficulty in getting to the Lake at all.

_30th July, 1868._--We commenced our march back, being eager to get to
Chikumbi's in case Mohamad should go thence to Katanga. We touched at
Mapuni's, and then went on to the Molongosi. Clouds now began to cover
the sky to the Mpanda, which has fifteen yards of flood, though the
stream itself is only five yards wide, then on to the Mato and
Moiegge's stockade, where we heard of Chikumbi's attack on
Kombokombo's. Moiegge had taken the hint, and was finishing a second
line of defence around his village: we reached him on the 1st August,
1868, and stopped for Sunday the 2nd: on the 3rd back to the Rofubu,
where I was fortunate enough to hire a canoe to take me over.

In examining a tsetse fly very carefully I see that it has a
receptacle at the root of the piercer, which is of a black or dark-red
colour; and when it is squeezed, a clear fluid is pressed out at its
point: the other two parts of the proboscis are its shield, and have
no bulb at the base. The bulb was pronounced at the Royal Society to
be only muscle, but it is curious that muscle should be furnished
where none is needed, and withheld in the movable parts of the shield
where it is decidedly needed.

_5th August, 1868._--Reach Kombokombo, who is very liberal, and
pressed us to stay a day with him as well as with others; we complied,
and found that