, for instance, and on many
previous and subsequent occasions, I developed the glass plates--and I
think with satisfactory results--out in the open, with merely the
fly-leaf of the tent sheltering me overhead so as not to have the direct
rays of the stars shining upon the photographic plates. Indeed, there was
light enough coming in around the tent for me to see quite plainly what
was going on outside. I simply covered up the developing trays as an
extra precaution, and seldom--in fact, never--spoiled a negative in
process of development.

I also found developing tanks quite serviceable when a great number of
negatives had to be developed quickly. The red lamp necessary for
photographic work was invariably a great nuisance. I do not believe that
a compact, practical dark-room lamp has yet been invented which is really
serviceable to an explorer. If it is a candle lamp the candle melts
quickly in those hot countries, producing an extra large flame which
generally cracks the red glass, and makes so much smoke that the upper
aperture becomes blocked and puts the light out when you happen to be at
the most crucial point of your work.

The oil lanterns would be better, were it not for the difficulty and
messy nuisance of carrying and re-filling the lamp each time with oil.
Electric lights, which are the only practical ones, of course are out of
the question when you have to be away for a year or a year and a half,
the storage batteries getting damaged easily by damp and the innumerable
accidents which you have when exploring.

The greatest care had to be used in repacking the developed glass plates.
I owe to the care I took of them that I was able to bring back 800
excellent negatives out of 800 glass plates exposed.

The night was a little warmer than usual on July 15th--minimum 53 deg. F.
There was a heavy mist over the river when we rose in the morning, and we
had to delay our departure until 7.30 a.m. When the mist began to rise it
hung about in beautiful curves converging to a common radiating centre to
the west.

During the night I had noticed a weird lunar effect--a perfect cross of
immense proportions intersecting the crescent moon, which had a radiating
halo surrounding it.

Four thousand metres from our camp we came to a tributary 3 m. wide on
the left side of the river. It came from the W.S.W. Near this a streamlet
1 m. wide entered the Arinos on the right side, and another streamlet of
equal size farther d