E. E. FREE 

 Private LiBRAUlf 



V 



A Magazine of General Botany 



VOIiUME 19 

 NUMBER 4 

 APRIL , 1916 



CONTAINING 



A Critique of the Hypothesis of the Lime-Magnesia Ratio. I 



Charles B. Lipman 83 



I. The Red Colour of the Mesocarp of Seeded Fruits in the Persimmon 

 {Diospyros Kaki). II. A Visual Method for Estimating Astringency. . . 

 Francis E. Lloyd 106 



Books and Current Literature 114 



Notes and Comment 117 



PTJBLISHED MONTHLY 



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TUCSON, ARIZONA 



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Entered as s«coDd-class matter March 9, 1912, at the post office at Baltunore, Maryland, under the Act of July 16, 189i 



