Manchurian Books

I followed the
gesture and saw, above the moon door and on each side of it, two
gently curving bosses of rock, perhaps a foot in diameter.
"The moon door's keys," I said.
"It begins to look so," answered Larry. "If we can find them," he
added.
"There's nothing we can do till moonrise," I replied. "And we've none
too much time to prepare as it is. Come!"
A little later we were beside our boat. We lightered it, set up the
tent, and as it was now but a short hour to sundown I bade them leave
me and make their search. They went off together, and I busied myself
with opening some of the paraphernalia I had brought with me.
First of all I took out the two Becquerel ray-condensers that I had
bought in Sydney. Their lenses would collect and intensify to the
fullest extent any light directed upon them. I had found them most
useful in making spectroscopic analysis of luminous vapours, and I
knew that at Yerkes Observatory splendid results had been obtained
from them in collecting the diffused radiance of the nebulae for the
same purpose.


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