. Croonian Lecture: The Respiratory Process in Muscle and the Nature of Muscular Motion . ormerlydescribed by Kanke. Nevertheless, if the muscle be rapidly scalded, thesource of lactic acid is fixed/ and little or no acid production takes place, asdu Bois Eeymond formerly showed. If the muscle be left at room temperatures in nitrogen or other anaerobicatmospheres, it yields lactic acid at a uniform rate determined by thetemperature, and so approaches and finally reaches the acid maximum. Itreaches it, however, faster than it does in air at the same temperature. Inoxygen, on the other hand, it
. Croonian Lecture: The Respiratory Process in Muscle and the Nature of Muscular Motion . ormerlydescribed by Kanke. Nevertheless, if the muscle be rapidly scalded, thesource of lactic acid is fixed/ and little or no acid production takes place, asdu Bois Eeymond formerly showed. If the muscle be left at room temperatures in nitrogen or other anaerobicatmospheres, it yields lactic acid at a uniform rate determined by thetemperature, and so approaches and finally reaches the acid maximum. Itreaches it, however, faster than it does in air at the same temperature. Inoxygen, on the other hand, it is found to accumulate no lactic acid at allduring many hours or indeed during days at room temperatures. Upon stimulation an increase of lactic acid is found. This had been knownof course from du Bois BeymoncVs time, but the fact had been repeatedly vol. lxxxix.—b. 2 p 454 Dr. W. M. Fletcher and Prof. F. G. Hopkins. denied, and the actual quantitative evidence supporting it had been whollyunsatisfactory. If a muscle so fatigued, and containing lactic acid, be now left at rest in an. A / x 1 j Hours 24 48 72 96 Fig. —The course of lactic acid production in an atmosphere of hydrogen at 12° C.(Figs. 5, 6, and 7 from the i Journal of Physiology,5 vol 35, p. 273 (1907).)
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