Apparently there was a whole chapter on the Grey Man which was cut because it was too depressing... here's a snippet:
"I traversed one day and stopped again, hoping to find colossus gone and some vestige of my victim; but, I should judge, the giant centipede did not trouble itself about bones. At any rate both had vanished. The faintly human touch of these little creatures perplexed me greatly. If you come to think, there is no reason why a degenerate humanity should not come at last to differentiate into as many species as the descendants of the mud fish who fathered all the land vertebrates. I saw no more of any insect colossus, as to my thinking the segmented creature must have been. Evidently the physiological difficulty that at present keeps all the insects small had been surmounted at last, and this division of the animal kingdom had arrived at the long awaited supremacy which its enormous energy and vitality deserve. I made several attempts to kill or capture another of the greyish vermin, but none of my missiles were so successful as my first; and, after perhaps a dozen disappointing throws, that left my arm aching, I felt a gust of irritation at my folly in coming so far into futurity without weapons or equipment. I resolved to run on for one glimpse of the still remoter future—one peep into the deeper abysm of time—and then to return to you and my own epoch. Once more I remounted the machine, and once more the world grew hazy and grey.
http://en.wikisource.org/wiki/The_Grey_Man
