. Carnegie Institution of Washington publication. LIQUIDS AND ALIBIED EXPERIMENTS. 31 23. Transpiration of Hydrogen into Air Through Water.—These experi- ments, given in table 7 and fig. 10, are a sustained repetition of the work in §11, using a much heavier swimmer, so that a decrease of the area of diffusion due to loss of gas by transpiration may not occur. The curve, as before, is remarkably regular and partakes of the qualities of the earlier curve (fig. 5). The initial rate is — w = 7i X io~®g/day or io~^%/sec., which is of the same order as the datum of table 2, remembering that th
. Carnegie Institution of Washington publication. LIQUIDS AND ALIBIED EXPERIMENTS. 31 23. Transpiration of Hydrogen into Air Through Water.—These experi- ments, given in table 7 and fig. 10, are a sustained repetition of the work in §11, using a much heavier swimmer, so that a decrease of the area of diffusion due to loss of gas by transpiration may not occur. The curve, as before, is remarkably regular and partakes of the qualities of the earlier curve (fig. 5). The initial rate is — w = 7i X io~®g/day or io~^%/sec., which is of the same order as the datum of table 2, remembering that the constants of the apparatus are slightly difi"erent. The coefficients of trans- piration are, since <i= cm.^ (inside area), h' cm. 2h"' = cm. / = cm. and, if the water heads be taken as a trial gradient for comparison, so that dp — = 549 dynes/cm. K = i6Xio -10 somewhat larger than the above datum (^= X lo-'^), the difference, however, being of the same order as the irregularities of the sectional areas of 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 irregular temperatures. Close agreement, therefore, was not to be looked 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 which diffusion takes place. We may therefore write, since — ^ = ^g/day or ;g/sec. ^ = ;^* and from this K = '° which approaches the coefficient for air (;'°), as would be antici- pated. One may note, however, that it is nevertheless still below 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 Carnegie Institutio
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