Chapter 16 IT is remarkable how life adapts itself to its environment, and, I may say, especially man, who is entirely hairless and unprotected from the elements and comparatively slow and weak. Here was I, a man of the Twentieth Century, with perhaps a thousand years of civilization as my background, trekking through the wildernesses of a savage world with a man and a girl of the Old Stone Age, and quite as self-reliant and as much at home as they. I, who would not have ventured upon the streets of my native city in my shirt-sleeves, was perfectly comfortable, and not at all self-conscious, in a G-string and a pair of sandals. It has often made me smile to contemplate what my strait-laced New England friends would have thought, could they have seen me; and I know that they would have co