Documentary titled "The Secret Land" on the U.S. polar expedition,Operation High Jump. Clip opens with aerial and elevated views of landmark buildings and sites in Washington DC, including U.S. Capitol, White House,and the National Mall area. Elevated view looking back toward Virginia, with Potomac River and Key Bridge in the distance. U.S. Secretary of Navy James Forrestal makes a speech explaining the purpose of the polar expedition. Chief of U.S. Naval operations Chester W. Nimitz talks to U.S. Navy officers in his office. The Norfolk Naval base in Virginia. U.S. Navy officers and personnel aboard a vessel. Sailors prepare huskies (sledge dogs) in New Hampshire, for the polar expedition. Convoy of U.S. ships and several other vessels leave the naval base and head for the expedition. Animated map shows designated landing zone in Antarctica. Helicopters and planes will serve as scouts and transportation medium for the expedition.
Animated slides shows ideal working conditions for an employee in a factory. Conveys that a good wage, properly ventilated and lighted workrooms, proper safety measures,health care,and sanitary services are must for providing an ideal working environment to the employees of a factory.
Pictures show laying of underground telephone cables using a railroad car. Hand shows primitive telephone cables. A modern '1212 Pairs 2424 Wires' type of telephone cable. Man work on underground telephone cables. Men near a manhole lay underground telephone cable. A network of underground telephone lines. Man in switchboard office connects various telephone lines.
Shows sardines in water. Fishermen in America catch sardines by lowering fish nets into water. The catch is transferred to a fishing smack.
An American fishing smack loaded with sardines underway in harbor. Fishermen aboard the smack unload sardines in buckets. Sardines are put on conveyor belts in a floating cannery.
A Ford stake bed truck, loaded with boxes, approaches, climbing up a hill, toward the camera. An elevated highway carrying traffic in background. The truck turns and proceeds up another street. Scene shifts to the truck moving on a highway. Then begins a sort of anatomy of the truck. Its various parts are shown. Beginning with the chassis, the film reveals its side rails; steel crossmembers; forward end;and 4-cylinder,50HP Ford engine. A cutaway of the automobile engine and animated illustration show cylinder, pistons, valves, intake manifold, and carburetor. Rotating crankshaft, fuel pump and filter, and positive lubrication system are shown in action. Cutaway view of crankcase shows lubrication and valve lifters and springs in motion.The entire engine lubrication system is shown. The cooling system is described and shown.The ignition system and distributor are shown.Three point rubber insulated engine mounting is shown. The 4-speed transmission is shown in cutaway with gears moving. Single plate clutch is shown and the drive shaft assembly.
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