. The Biochemical journal, 1918. Biochemistry. THE VISCOSITY OF liLOOD 61 then emptied into D by Ijlowin^r slowly down the rubber tube E until the whole of the blood is in D. Tlu' corpuscles are mixed with the plasma by blowing a gentle stream of air tiuounji or by stirring with a coiled wire». The bubbles which form are destroyed by touching them with a hot needle and the time of flow from B to A noted with a stopwatch, the blood in I) being continually stirred with a coiled Fig. 1. 111. Causes of Error. (a) Conditions setting up turbulent jhw. The transition between the expanded porti
. The Biochemical journal, 1918. Biochemistry. THE VISCOSITY OF liLOOD 61 then emptied into D by Ijlowin^r slowly down the rubber tube E until the whole of the blood is in D. Tlu' corpuscles are mixed with the plasma by blowing a gentle stream of air tiuounji or by stirring with a coiled wire». The bubbles which form are destroyed by touching them with a hot needle and the time of flow from B to A noted with a stopwatch, the blood in I) being continually stirred with a coiled Fig. 1. 111. Causes of Error. (a) Conditions setting up turbulent jhw. The transition between the expanded portions and the capillary itself must be a gradual one and especially must not be constricted. One instrument constructed led to much waste of time because of this latter failing. ^ Blowing air through is of course inadmissible when the effect of small changes in the CO, content of the blood is in question but all the experiments to be described have been conducted with the blood fully oxygenated, and the changes in viscosity dealt with are very much greater (by as much as 1000 %) than the small changes produced by alterations in the viscosity of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Biochemical Society (Great Britain); University of Liverpool. Biochemical Dept. London [etc. ] Cambridge University Press
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