Volume 1

A text-book of human physiology : including histology and microscopical anatomy : with special reference to the requirements of practical medicine / by L. Landois ; translated from the seventh German edition, with additions, by William Stirling.

Date:
1891
Catalogue details

Licence: Public Domain Mark

Credit: A text-book of human physiology : including histology and microscopical anatomy : with special reference to the requirements of practical medicine / by L. Landois ; translated from the seventh German edition, with additions, by William Stirling. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    [The spectrum necessarily varies with tire concentration of the solution. Fig. 24 shows hoAV the absorption-hands iircrease with increase in the strength of the solution. With a 1 per cent, solution all the spectrum disappears, with the exception of the extreme red, and as the dilution continues we see .successively the orange, green, yellow, blue, indigo, and violet. With '65 per cent, of Ilb02 tliere is only one absorption-band.] Reduction of Oxyhsemoglobin.—It gives up its O very readily, however, even Oxj'- hoemoglobln 0-8 7. Oxy- litemoglobin 0-18 7. Carbonic Oxide- Ha3moglobin. Reduced Hajmoglobin. Metlise- moglobin. Hoematin in Acid Soiution. Hasnintin in nn Aikalinc Solution. Htemo- chromogen in Alkaline Solution. Reduced Hiematin. Fig. 23. Spectra of hfemoglobin and its compounds. when means which set free absorbed gases are used. It is reduced (1) by the removal of the gases by the air-famj), (2) by the conduction through its solution of other gases (CO), and (3), by heating to the boiling-point. In the circulating blood its 0 is very rapidly given up to the tissues, so that in sutfocatcd animals only reduced hcemoglobin is found in the arteries. Some constituents of the serum and sugar remove its 0. Spectrum of reduced Haemoglobin.—By adding to a solution of oxyhasmoglobin reducing substances—e.y., ammonium sulphide, iron filings, or Stokes’s fluid [tartaric acid, iron jn’oto-sulphate, and excess of ammonia]—the two absorption- bands of the spectrum disappear, and reduced haemoglobin (gas free), with one
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