Hearst's International Volume 2-4

Hearst's International Volume 2-4

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: ... Antillean examples), as well as certain volcanoes yield gases in such quantity that one geologist (Shaler) has estimated the gaseous product of the world's volcanoes to equai Tr the product in solid matter; but it remained for Mont Pelee to give opportunity for determining more accurately than ever before the quality and effects, as well as the quan--tity, of the extruded gases. (4) In the extent of magnetic action and the intensity of electric disturbance in the air, the eruptions of Mont Pelee open a new epoch in vulcanology. The great explosion of May 8 occurred a little after 7:50 a. m., as determined by. stopped clocks and watches near by as well as more distant observations; the magnetoscope at Cheltenham, Maryland, was seriously disturbed about 7:53, that at Baldwin, Kansas, about 7:55, and that at Honolulu about 7:57, all reduced to St. Pierre time; and the relation was almost precisely repeated, so far as Cheltenham and Baldwin are concerned; in connection with the outbreak of May 20. These magnetic phenomena are withou-t known precedent. The development of atmospheric electricity by the outcasting of gaseous and solid matter may not have been; unprecedented; yet the phenomena were observed and recorded, photographically and otherwise, more accurately than ever before, so that for the first time the details are available for critical study. The natural history of volcanoes and the relations of vulcanism to earthquakes are fairly understood--though it may reasonably be anticipated that the researches undertaken in connection with Mont Pelee and La Soufriere will add much to current kn0wledge--and may best be stated in terms of geology, i. e., of continent-making. As pointed out by Powell, the stages of building and destruction of...show more

Product details

  • Paperback | 274 pages
  • 189 x 246 x 15mm | 494g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236498291
  • 9781236498298