to work to take my observations.

What a blow awaited me! The sextant and chronometer had both
been broken beyond repair, and they had been broken just this
very night. They had been broken upon the night that Lys had been
seen talking with von Schoenvorts. I think that it was this last
thought which hurt me the worst. I could look the other disaster
in the face with equanimity; but the bald fact that Lys might be
a traitor appalled me.

I called Bradley and Olson on deck and told them what had
happened, but for the life of me I couldn't bring myself to
repeat what Wilson had reported to me the previous night.
In fact, as I had given the matter thought, it seemed incredible
that the girl could have passed through my room, in which Bradley
and I slept, and then carried on a conversation in the crew's
room, in which Von Schoenvorts was kept, without having been seen
by more than a single man.

Bradley shook his head. "I can't make it out," he said. "One of
those boches must be pretty clever to come it over us all like
this; but they haven't harmed us as much as they think; there are
still the extra instruments."

It was my turn now to shake a doleful head. "There are no extra
instruments," I told them. "They too have disappeared as did the
wireless apparatus."

Both men looked at me in amazement. "We still have the compass
and the sun," said Olson. "They may be after getting the compass