# The diffusion of gases through liquids and allied experiments . uch heavier swimmer, so that a decrease of the area ofdiffusion due to loss of gas by transpiration may not occur. The curve, asbefore, is remarkably regular and partakes of the qualities of the earliercurve (fig. 5). The initial rate is — m = 71 X io^g/day or 8.2 X io^^g/sec.,which is of the same order as the datum of table 2, remembering that theconstants of the apparatus are slightly different. The coefficients of trans-piration are, since a =11.5 cm.^(inside area), //= 11.5 cm. 2/f = 9.ocm. / = 20.5 cm. and, if the water hea

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The diffusion of gases through liquids and allied experiments . uch heavier swimmer, so that a decrease of the area ofdiffusion due to loss of gas by transpiration may not occur. The curve, asbefore, is remarkably regular and partakes of the qualities of the earliercurve (fig. 5). The initial rate is — m = 71 X io~^g/day or 8.2 X io~^^g/sec., which is of the same order as the datum of table 2, remembering that theconstants of the apparatus are slightly different. The coefficients of trans-piration are, since a =11.5 cm.^(inside area), //= 11.5 cm. 2/f = 9.ocm. / = 20.5 cm. and, if the water heads be taken as a trial gradient for comparison, so thatdp dl — 549 dynes/cm. ^=i.3X lo K= 16X10 -10 somewhat larger than the above datum (^=1.1 X io~), the difference, however, being of the same order as the irregularities of the sectional areasof the diffusion columns and referable, in part, to the values of h and h!involved. There is, furthermore, a difference in the mean of the irregulartemperatures. Close agreement, therefore, was not to be looked for.. c%W. V) ^4- ;29c%4 () i^ Vi iX 29Jk&lt;3 Fig. 10.—Chart showing loss of mass of gas in diver in lapse of days.Diffusion of hydrogen into air. The final coefficients are largely subject to the water heads under whichdiffusion takes place. We may therefore write, since — wt = 3.5X10®g/day or 4.oXio~g/sec. ^ = 0.64X10^* and from this K = 0.78X10°which approaches the coefficient for air (0.91X10^°), as would be antici-pated. One may note, however, that it is nevertheless still below it. 32 THE DIFFUSION OF GASES THROUGH Table 7.—Diflfusion of hydrogen through water into air. Heavy swimmer, il/=37.42;i?7, =4i.45X10; p, n=i3.6; i/p(, = o.3486;* A = Mgpm/Rh = o.oiioy, h=i.S cm.;A = 11.5 cm.; A=4.5 cm.; l = 20.71 19] 2021 22|232425!26|27128!2930 May 123456 78 000030300000 45000000000030•5150

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