A Treatise on Diagnostic Methods of Examination

A Treatise on Diagnostic Methods of Examination

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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. 1909 edition. Excerpt: ...water at the room temperature. After about fifteen minutes the eudiometer tube and its contents will be at the same temperature as the surrounding water. The tube is then lifted far enough out of the water to equalize the levels of the fluid inside and outside, and at this moment the volume of the enclosed nitrogen is read off. The temperature of the water and the barometric pressure should also be recorded. The volume of gas estimated must now, for the purpose of calculation, be reduced to 0 C, 760 mm. barometric pressure, and absolute dryness, according to the formula: _ 760 (1 + 0.00366 f) v (b--w) r7 = Reduced volume desired. v = Volume read off. b = Barometric pressure at the time of reading, in mm. Hg. w = Tension of water vapor at a temperature /, in mm. Hg. t = Temperature of water at time of reading. 0.00366 = Coefficient of expansion of gases for 1 C. The values for w corresponding to the temperatures usually met with are as follows: 1 The method of preparation of the hypobromite solution as outlined by Rice can be highly recommended. Two solutions are necessary, and may be retained for any ordinary length of time. 1. A solution of 125 gm. of bromin and 125 gm. of sodium bromid in sufficient water to make the volume up to 1000 c.c. 2. A solution of sodium hydroxid of a specific gravity of 1250 (22.5 per cent.). To prepare the hypobromite for use, mix equal volumes of the two solutions, and dilute with 1J volumes of water.--Ed. One gram of urea furnishes 354.3 c.c. of nitrogen (a little less than the theoretic quantity); hence, the following proportion will determine the amount of urea (x) in the 5 c.c. of urine employed. 354.3: 1 = v' x x =?/ 354.3 grams. The percentage of urea contained in the urine can be very easily determined by...
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Product details

  • Paperback | 508 pages
  • 189 x 246 x 26mm | 898g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123661058X
  • 9781236610584