OFFICIAL USE ONLY
percentage of mn? in fish.
zn?
Unlike localization in the liver of mammals ’
was found distributed fairly uniformly among the tissues.
The
co? found in clams accounted for the major portion of the activity.
(The ability of clams to concentrate c0°° selectively was verified by
laboratory experiments.)
The ye rcentage of calcium in the ‘Solis that is available to the
plants is not known.
The Sunshine Units reported are on the basis
that all of the calcium is available.
This provides a base line until
better knowledge is gained but itis recognizedthat the correctvalue
for Sunshine Units probably are one to two orders of magnitude higher. ae
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