Scientific American Volume 105

Scientific American Volume 105

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911-07 edition. Excerpt: ...and the subsequent liquefaction by means of an alkali. Later he was able to combine the action of the two factors in one solution by using tannate of ammonia. With this combination he was able to secure development without the presence of oxygen; his methods for eliminating oxygen, have. however, been criticized. He obtained also similar results with the eggs of starfish. As a. result of some of Loeb's work, the action of the chemicals used in these various experiments was compared to the' action of ions. or of electric charges. To test the validity of the assumption that alkalles acted because of the negative ions (--0H) produced when they were dissolved in water, and that acids acted because of the positive ions (+1-i), Delage arranged an apparatus in which charges of electricity could be sent through the unfertilized eggs. He obtained a varying number of developing eggs as a result of' sending first a positive and then a negative charge through the preparation. The following year, however, on repeating his, Fire in all its Destructive Horrors has at last found its master in Pyrene is a combination ol powerful gases in liquid iortn absolutely devoid of moisture. _ thus rendering it a non-conductor of electricity. 1 when the liquid is subjected to a temperature ' of 200 degrees or more, it is instantly convened into a heavy, flexible non-poisonous gas blanket, which, surrounding the fire, ucludea oxygen, and extinguishes the fire without damaging adjacent property. Pyrone will not freeze at a temperature of la) degrees below zero; does not deteriorate with age, thus eliminating cost of renewal; it does not corrode metals or injure varnished surfaces or the most delicate fabric: or materials. It is equally more

Product details

  • Paperback | 788 pages
  • 189 x 246 x 40mm | 1,379g
  • United States
  • English
  • black & white illustrations
  • 1236978447
  • 9781236978448