Burwell, and
the
C. Sidney, Output,
and Robinson, of the Heart in
G. Canhy: The Normal Resting
Gaseous Adults.
Content of the Blood .Jr;ur. C’lin. Invcstig:~
ticIn , 1921 7 i, Si. 1):&t ctl1taillPll I>? ll~~tC‘~1Hill;,tii,II ill’ tlill ois~gi’l, Xliil ~!il~lroll tiiclsirl~ ColItCllt iiF 1 IifS mixed vcno~ls l~lood, by measuring the gas exchange in the lungs, and. by counting 1he ~~ulsc allow the estimation of the output OF the heart pc~ minute and per bloat. The authors consider that the circulation minute rolum~ c:rlculat ed frum the, UX~~~W figures is more rcliablc than that calculated from the carbou dioxide figures. Their studies indicate that the usnal minute output of tlie normal resting atlult is 3,100 to 4,600 e.c. and the uwal output per lleat is 611 to 711 C.C. : Itut, cxw’lltions occur and individuals under otherwise coustant conditions may show varial iolls from G,700 to -1,.X0 C.C. Qunntitativc studies of such a mnttc’r as the c>uilnlt 111’ the heart., thwcforc, are hctter studied as individual results than as average. From the tables zcporterl, it is apparent that neither the minute out,put nor 111~ rlutput l,cr l)rnt has any 13act or nulcw-rrrthv r~~lati~in to liwljweight, to ~HH~,V The authors insist CO, 1 III* winsurface area, or to the volnnw of oxq-gvn abaorlw~. tionship which must exist hctwwn the minnt~e rrutput, a.ncl I,naal metabolic r:ltln alit1 rxcrciw. Dublin, Louis I., Fisk, Eugene Lyman, and Kopf, Revealed by Periodic Health Examinations. 576.
Edwin Amer.
as part of the work of the Life Extension Institute, white males, supposedly able to work, are reported. and serious defects is found to be highest at the older moderate defects are Common among young men.
W.: .Tour.
Physical Defects Sfi., 1905,
3rd.
as 170.
the examinations on lF,6GS The proportion of advanced age groups, while minor rn~d