Experimental Inquiries Volume 1

Experimental Inquiries Volume 1

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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. 1774 edition. Excerpt: ... evacuation. About eight ounces of blood were taken away into four vessels, viz. into two cups and two saucers, in the following manner: A plate holding both a cup and a saucer was held under the arm, and the blood was first received into the saucer, to the quantity of a spoonful, then as much_more was received into the cup that stood by it; then again the blood was suffered to run into the saucer, and afterwards into the cup, and so alternately till there was ' H 3 about about two' ounces in each, when they were carefully set down on a window where the thermometer stood, at 579; the plate was placed by them, and con tained about a spoonful of blood, which had missed the saucer in the beginning of the evacuation. Next, the second plate was brought, and some blood was received rent times on the plate, each of them about the breadthof a shilling. Now, here, according to the reasoning in the objections made to some of the preceding experiments, the blood in the saucers having twice as much surface as that in the cups, ought to have coagulated in half the time; and that on the plates ought, from the largeness of the surface, to have coagulated in much less time; but just the contrary happened; for the ' blood in the cups was first completely coagulated, -that in the saucers next," and that on the plates latest of all. But, as r as the experiment seems curious, it may be proper to give a more particular detail of what was observed. ON looking at the first plate, at the end of seven minutes after it was set down on the window, the surface of the blood in the cup was considerably tran that which had dropt upon the plate. At the' end of fifteen minutes the blood in the cup and in the saucer were pretty much coagulated, or had a thick...show more

Product details

  • Paperback | 26 pages
  • 189 x 246 x 1mm | 68g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236925572
  • 9781236925572