but I cannot detect it.

We were now nearly in the latitude of Youldeh, and had only to push
west to reach it; but the cow camel that Jimmy and Tommy rode, being
very near calving, had not travelled well for some days, and gave a
good deal of trouble to find her of a morning. I wished to get her to
Youldeh before she calved, as I intended to form a depot there for a
few weeks, during which time I hoped the calf would become strong
enough to travel. On the morning of the 5th, only about half the mob
were brought up to the camp, and, as Mr. Tietkens' and my riding
camels were amongst them, we rode off to Youldeh, seven or eight miles
away, telling the others to come on as soon as they could. Mr. Young,
Saleh, and Tommy were away after the absent animals. On arriving I
found Youldeh much the same as when I left it, only now the weather
was cool, and the red sandhills, that had formerly almost burnt the
feet of men and animals, were slightly encrusted with a light
glittering mantle of hoar-frost in the shaded places, under the big
leguminous bushes, for that morning Herr Gabriel Daniel Fahrenheit had
fallen to 28 degrees. My old slabbed well had got filled up with sand,
and it was evident that many natives had visited the place since I
left on the 24th of March, 103 days ago. We managed to water our
camels, as they lay down on the top of the well, and stretched their
long necks down into it. We then quietly waited till long past midday
for the caravan to come up. We had nothing to do, and nothing to eat;
we could not dig out the well, for we had no shovel. At last Mr.
Tietkens got alarmed at the non-arrival of the party, and he went back
to the camp, taking my riding-camel with him, as she would not remain
quiet by herself. I remained there mighty hungry, and made some black
smoke to endeavour to attract any natives that might be in the
neighbourhood. I have before remarked that the natives can make
different coloured smokes, of different form, and make them ascend in
different ways, each having a separate meaning: hurried alarm, and
signal fires are made to throw up black and white smokes. No signals
were returned, and I sat upon a sandhill, like Patience on a monument,
and thought of the line, "That sitting alone with my conscience, is
judgment sufficient for me." I could not perceive any dust or sand of
the approaching caravan; darkness began to creep over this solitary
place and its more solitary occupant. I thought I