Show french rule out air photos for map making paris french colonial after years of experiment hane haie decided that airplane photographs cannot lie be used to make limps of the millions of acres of uncharted colonial territory much of it Is virgin forest so thick that thai engineers cannot work from the ground tile distortion of objects increasing in proportion to aliel distance from tile center of the hie plate and the difficulty of taking all pho to graphs from the same saine attitude altitude and under stu similar illar light conditions are blamed it had been planned to spend ten years in lie work by which time half of africa now unknown to map makers have been photographed to up to the alie present thile lime only cochin china hat flat has been photographed well and particularly because of the ease with which air photos have permilles per milled the mapping of rivers and lakes at the present time the raphy of hilf half of africa Is unknown although maps make inake a pretense pre lense nt at showing the general character of the co unity one fourth of asia and ons one linth of south america all uninhabited reg regions lons hae babe never b been en mapped |