Shot of long-haired man dressed in bear skin, carrying spiked club. CU of "prehistoric" man glancing skyward. Shot of clock in tower of observatory in Ottawa, 1:15 pm. TILT DOWN clock to entrance to observatory. Shot of sky, bright sun partially hidden by cloud. Interior shot of observatory showing man watching sky through giant telescope. CU of gauge and gauges on control panel. CU of time clock mechanism. Shot of dial of syncronometer, sweep second hand in motion. Shot of man lying in hammock, scanning with giant telescope. Exterior shots of Dominion observatory showing roof opening and closing.