In fifteen minutes more it had climbed high above the water, and with unerring accuracy directly toward its natal bundle of sticks overhead. The mother now came close, and with hoarse rasping notes and frantic heaves of tail and wings lent encouragement. Just before we paddled from sight, when the little fellow had reached his last rung, he partly opened his beak and gave a little falsetto cry,--a clear, high tone, tailing off into a guttural rasp. His splendid courage had broken at last; he had nearly reached the nest and he was aching to put aside all this terrible responsibility, this pitting of his tiny might against such fearful odds. He wanted to be a helpless nestling again, to crouch on the springy bed of twigs with a feather comforter over him and be stuffed at will with delectable pimpler pap. Such is the normal right destiny of a hoatzin chick, and the _whee-og!_ wrung from him by the reaction of safety seemed to voice all this. VII A WILDERNESS LABORATORY Robinson Crusoe had a wreck well stored with supplies, and we inherited only four walls and a roof. Still, we had a boy Friday--Sam, an ebony Demeraran, exactly half of whose teeth had been lost in the only automobile ride he had ever taken. Sam was sent by some personal Providence--perhaps the god of intelligence bureaus--as the first of our faithful following in Guiana. Sam had formerly been a warden in the Georgetown jail, and rumor had it that he left because he saw "jumbies" in the court where one hundred and nine men had been hung. And surely that was where jumbies would be found if anywhere. Even Crusoe's man must have admitted that. How wardenship could be of aid to us in our scientific work was a puzzle. Only once before did a servant's previous experience surpass this in utter uselessness. That was when a Russian chauffeur whom I had taken on trial found a cowboy saddle in my attic and seriously and proudly showed me in great detail, with the saddle strapped to the banisters, how with his long Cossack training he could stand on his neck when going at full speed! But Sam, like many another servant of the past, was to prove a treasure. We had come from New York with a very distinct idea of what we wanted to do, but no idea at all of just how or where we should begin. On kindly but conflicting advice and suggestion, we had searched hither and thither over the coastlands of British Guiana. Everywhere we found drawbacks. We wanted to be near primeval jungle, we wished to be free of mosquitoes and other disturbers of long-continued observation. We desired the seemingly impossible combination of isolation and facility of communication with the outside world.