Dixon and Atkins — Osmotic Pressures in Plants. 379 



These observations are graphically recorded in fig. 1, in which the ordiuates 

 represent the depressions of fi-eezing-poiut and the abscissae the months of 

 the year. The broken line is the graph for the concentration of the sap of 

 the wood of the stem ; the full line that of the root. 



JAN. FEB. MAR. APRIL MAY JUNE JULY AUG. SEPT. OCT. NOV. DEC. 



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