There is no doubt in my mind but that the red cell vol-
umes you found in the Marshallese are significantly smaller
than what we have regarded as "normal". It 18 my impression
that plasma volumes may also be slightly smaller but I will
need a little more time to confirm this.
There is nothing more I can add at the moment except
perhaps to note that the correlations between BY and TEW,
and between RCV and TBW appear to be better than I have seen
for data on other groups of subjects.
Please phone or write if you have any questions about
the data or their interpretation.
Sincerely,
Wilijdam E. Siri
Enclosures,
Co: Dr, L. Meyer
WES tpb