National Geographic : 1932 Nov
BINOCULARS SPY ON STRANGE BIRDS Little detailed study was possible from the ground (see text, page 619). Even the ornithologist, peering through specially powerful lenses, could seldom discern the smaller songsters. INDIANS HELPEDGATHER BOTANICAL SPECIMENS Armed with axes for heavy vegetation and cutlasses for undergrowth, they went into seemingly inaccessible places tofill their baskets. Many seemed to be born naturalists.