Moving Picture Age (1920) . t scientific facts were established bythese expeditions. As a matter of fact, the unique con-dition now existing has enabled the scientists to actuallystudy the workings of a volcano from the inside andto make many new discoveries. It is because of theimportant instructional use of these pictures that theNational Geographic Society has permitted their dis-tribution. Some idea of the violence of the Mount Katmaieruption can be gained when it is stated that everybuilding in the entire city of New York could be throwninto the crater and it still would be only one-third
Moving Picture Age (1920) . t scientific facts were established bythese expeditions. As a matter of fact, the unique con-dition now existing has enabled the scientists to actuallystudy the workings of a volcano from the inside andto make many new discoveries. It is because of theimportant instructional use of these pictures that theNational Geographic Society has permitted their dis-tribution. Some idea of the violence of the Mount Katmaieruption can be gained when it is stated that everybuilding in the entire city of New York could be throwninto the crater and it still would be only one-third further idea is imparted with the statement that hada similar manifestation occurred in New York City allof Greater New York would have been buried under 15feet of ashes and, on account of the gases, it would havebeen many months before anyone would have been ableto approach nearer the city than Paterson. Philadel-phia would have been under a foot of ashes as theresult, and in darkness for 60 hours, while columns of. Thousands of steam jets always in active operation are visiblefrom the entrance to the Valley of Ten Thousand Smokes,although only a small portion of its 17 mile length can be smoke is always so dense that nothing beyond five milesis ever visible Some of the fumaroles emit steam under such pressure thatit does not become visible until it has risen several feet be-yond the mouth. Others, like the one shown above, are com-paratively tame and were used for experimental purposes andfor cooking 16 MOVING PICTURE AGE November, 1920 steam would have been visible as far away as Albanyand ash distributed over the whole of the Atlantic coastas far south as the Gulf. Five cubic miles of earth was thrown into the airas the result of the eruption and the area buried inashes equals that of the whole state of Colorado. Thereis no question that the smoking valley was caused bythe eruption, but the expedition found no evidence ofexplosive action. Most of the steam
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmotionp, bookyear1920
