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LLOYD.
PLATE 1.
The Ocotillio, Fouquieria splendens, in leafless condition.
CARNEGIE INSTITUTION OF WASHINGTON
PUBLICATION No. 82
PRESS OF GIBSON BROTHERS WASHINGTON, D. C.
Normal daily periodicity
Responses in transpiration and stomatal movement to sudden changes in illumi-
Relative humidity and stomatal movement
Relative humidity-its influence upon the condition of stomata
PART II.
Physiology of stomata, with special reference to the metabolism of guard-cells
Normal diurnal changes in contents of guard-cells
Summary
Relation of stomata to certain parts of the spectrum, to darkness, and to air devoid
of carbon dioxid
Beginning at sunrise
Experiments commencing at time of minimum starch content of guard-cells