I had to smile as I read Bradley's report. In those four days
he had doubtless passed through more adventures than an African
big-game hunter experiences in a lifetime, and yet he covered it
all in a few lines. Yes, we are becoming accustomed to adventure.
Not a day passes that one or more of us does not face death at
least once. Ahm taught us a few things that have proved
profitable and saved us much ammunition, which it is useless
to expend except for food or in the last recourse of self-
preservation. Now when we are attacked by large flying reptiles
we run beneath spreading trees; when land carnivora threaten us,
we climb into trees, and we have learned not to fire at any of
the dinosaurs unless we can keep out of their reach for at least
two minutes after hitting them in the brain or spine, or five
minutes after puncturing their hearts--it takes them so long to die.
To hit them elsewhere is worse than useless, for they do not seem
to notice it, and we had discovered that such shots do not kill
or even disable them.

September 7, 1916: Much has happened since I last wrote. Bradley is
away again on another exploration expedition to the cliffs. He expects
to be gone several weeks and to follow along their base in search of
a point where they may be scaled. He took Sinclair, Brady, James,
and Tippet with him. Ahm has disappeared. He has been gone about
three days; but the most startling thing I have on record is that
von Schoenvorts and Olson while out hunting the other day discovered
oil about fifteen miles north of us beyond the sandstone cliffs.
Olson says there is a geyser of oil there, and von Schoenvorts is
making preparations to refine it. If he succeeds, we shall have
the means for leaving Caspak and returning to our own world.