1919] WEAVER &• MOGENSEN— TRANSPIRATION 423 



seedlings from the nurseries, and to Professor T. J. Fitzpatrick 

 for careful reading of the manuscript and proof. 



University of Nebraska 

 Lincoln, Neb. 



LITERATURE CITED 



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8. Hales, Sxephen, Statik der Gewachse, p. 29. 1748. 



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11. Iljin, V. S., Relation of transpiration to assimilation in steppe plants. 

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 Imperial Univ. Tokyo 15: part 3. 1901. 



13. LrvTNGSxoN, B. E., and Shreve, Edixh B., Improvements in the method 

 for determining the transpiring power of plant surfaces by hygrometric 

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3:384-392. 1916. 



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 and number of stomata. Amer. Jour. Bot. 2:487-504. 1915. 



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