. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine . ,and the reduced form ashaemoglobin simply, orreduced haemoglobin (H).By a comparison ofthe spectra it will be seenthat the bands of oxy-haemoglobin lie betweenthe D and Elines; thatthe left band near D isalways the most definitein outline and the mostpronounced in every re-spect except breadth; that it is in weak solutions the first to ap-pear, and the last to disappear on reduction; that there are twoinstances in which there may be a single band from haemoglo-bin—in the one case when
. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine . ,and the reduced form ashaemoglobin simply, orreduced haemoglobin (H).By a comparison ofthe spectra it will be seenthat the bands of oxy-haemoglobin lie betweenthe D and Elines; thatthe left band near D isalways the most definitein outline and the mostpronounced in every re-spect except breadth; that it is in weak solutions the first to ap-pear, and the last to disappear on reduction; that there are twoinstances in which there may be a single band from haemoglo-bin—in the one case when the solution is very dilute and whenit is very concentrated. These need never be mistaken for eachother nor for the band of reduced haemoglobin. The latter is ahazy broad band with comparatively indistinct outlines, anddarkest in the middle. It will be further noticed that in all these instances, apartfrom the bands, the spectrum is otherwise modified at eachend, so that the darker the more centrally placed characteristicbands, the more is the light at the same time cut off at eachend of the Fig. 307.—Crystallized haemoglobin (Gautier). a, b,crystals from venous blood of man; c, fromblood of cat; d, of Guinea-pig; e, of marmot;f, of squirrel. THE RESPIRATORY SYSTEM. 387
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