Show the curvature of the earth at the last reception and exhibition of tho the royal society in london it ir yule oldham showed how ono one could demonstrate tho the curvature of the earth laith with a camera harint a dallmeyer telephoto lens A canal lit in norfolk la is crossed by two IMO bridges six miles apart marks were fixed on both bridges and halt half way ft ay between them all three at the same level above the tha water the camera permitted ot of photographing the three marks from the ono one end and the middle mark ap ahna the others |