The little tent was lined with tar paper which had no glaze and
was of an intense black, expelling all white rays which might
be injurious to his exposed plates, the red rays not doing this.
When his plates were dry Billy put one of them in his frame, which
contained a sheet of plain glass, and slipped one of his sensitized
sheets under it, closing the frame with a cleat under the back.
Passing this in front of the lamp for a few moments, he removed the
paper and placed it in a tray containing a developing fluid, when
at once the print began to show very plain.
When it was dark enough he removed it from the tray and put it in
another which contained a fixing fluid which prevented further
development, and presently washed it thoroughly in clear water.
"What do you think of that?" he asked Jack, with a tone of triumph.
"It is convincing, isn't it?"
"It shows Herring talking to Jenkins, but you cannot tell what he
says," remarked Jack with a smile.
"No, I have not got to taking talking pictures yet," laughed Billy,
"but the very fact that he was with Jenkins at all means something."
CHAPTER XXII
EVERYTHING IS SETTLED
The boys left the little developing room after putting out the lights
and seeing that all was safe and that there was no chance of fire,
and made their way to the middle of the camp, where there was an open
space in which a number of the boys had gathered to amuse themselves.
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