National Geographic : 1933 Nov
608 THE NATIONAL GEOGRAPHIC MAGAZINE TO BE CATALOGUED, SPECIMENS MUST BE AT LEAST PROVISIONALLY IDENTIFIED The author is measuring, in the field laboratory improvised on the Geographic boat at Salto do Hui, some of the more difficult birds taken on the Brazil-Venezuela frontier. THE ENGINE CHOSE A BAD SPOT TO BECOME TEMPERAMENTAL When the N. G . S . was at the very peak of this surging rapid, with her nose almost under water, her motor sputtered and died. She was saved from crashing on the rocks below only by the miracu lous strength of the thin piassaba line at which the men were tugging (see text, page 607).