The histology and histochemistry of man : a treatise on the elements of composition and structure of the human body / by Heinrich Frey ... Translated from the fourth German edition, by Arthur E.J. Barker ... and revised by the author. With six hundred and eight engravings on wood.

  • Heinrich Frey
Date:
1874
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Licence: Public Domain Mark

Credit: The histology and histochemistry of man : a treatise on the elements of composition and structure of the human body / by Heinrich Frey ... Translated from the fourth German edition, by Arthur E.J. Barker ... and revised by the author. With six hundred and eight engravings on wood. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

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    of Hoppe, to which the statements made above in respect to blood- crystals refer. A dilute solution of oxyhannoglobin shows, as was discovered by Iloppe, two broad bands of absorption between the lines D and E of the solar spectrum (fig. 2, a) in the yellow and green part. Solutions of reduced Fig. 2.—Appearances of solutions of haemoglobin in the spectroscope, a, oxyhajmoglohin and nitroxy- hsemoglobin; b, carbonic oxide haemoglobin ; c, reduced haemoglobin ; rf, haematin in acid solution; e, haematin in alkaline solution; /, reduced liaematin. Solar spectrum with Frauenhofer's lines. haemoglobin, on the other hand, have only one absorption band between D and E (e), (Stokes). Seduction of oxyhaemoglobin takes place easily. It may be brought about by the action of carbonic acid also. Seduced haemoglobin may also form crystals. They arc of a deep purple colour, and far more soluble than those of oxyhaemoglobin. The latter substance, in contact with carbonic oxide gas, parts with its oxygen, and absorbs the last named compound. Tn this way a crystalline compound of carbonicoxide with haemoglobin is produced (Hoppe).
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