Carpenter's principles of human physiology . Fig. graph, the levers of which, 11 l, register their movements on the drum c in sucha manner that their tracings may be exactly parallel and comparable with oneanother. Fig. 140 shows such a triple tracing after the india-rubber bag hasbeen for a few times rhythmically compressed? It is here evident that, as in-dicated by the oblique dotted line, the period at which the maximum of tension is attained, is latest in thatportion of the tube whichis most distant from theimpelling organ, and acertain, though minute,retardation occurs in thepassage
Carpenter's principles of human physiology . Fig. graph, the levers of which, 11 l, register their movements on the drum c in sucha manner that their tracings may be exactly parallel and comparable with oneanother. Fig. 140 shows such a triple tracing after the india-rubber bag hasbeen for a few times rhythmically compressed? It is here evident that, as in-dicated by the oblique dotted line, the period at which the maximum of tension is attained, is latest in thatportion of the tube whichis most distant from theimpelling organ, and acertain, though minute,retardation occurs in thepassage of the wavethrough the column ofliquid. The actual amountof this retardation has beencarefully investigated byCzermak,* with the aid ofhis photosphygmograph, in which the fluctuations of a ray of light reflected froma small mirror placed over the radial artery are registered on a screen of pre-pared photographic collodion. The mean of a series of twenty experimentsshowed that the pulse in the radial artery at the wrist was 0*18 sec. earlierthan in th
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectphysiology, bookyear1
