THE ALCOHOL INDUSTRY. PART L 183 



cuttings. An apparently dying flow can thus be revived On two dif- 

 ferent occasions this was demonstrated. . . 



First. 



Second. 



Day. 



Yield. 



Day. 



1 

 Yield. 



Fifth 



cc. 



5,400 

 5,130 

 4.720 



Fifteenth 



cc. 



1,425 

 915 



Sixth 



Sixteenth _ - 



Seventh __. 



Then thicker slices were rei 

 Seventeenth 



Qoved. 



Then thicker slices were 

 Eighth 



removed. 



6,250 



1,555 







The rate of sap flow is influenced to a marked degi-ee by the number 

 of daily cuttings. For six days three cuttings were made during each 

 period of twenty-four hours, at 6 o'clock in the morning, 12 noon, and 

 6 in the afternoon. The day flow was thus made greater than the 

 night flow, as is shown by the following figures : 



Rate of sap flow from a huri palm in 12-hour periods; three cuttings 

 each 2Jf hours. 



Date. 



Flow. 



Day. 



Night. 



August 2, 6 a. m. to 6 p. m - _ 



cc. 

 3,030 



cc. 



August 2, 6 p. m. to August 3, 6 a. m 



2,800 









3,050 





August 3, 6 p. m. to August 4, 6 a. m _ 



2,370 







August 4, 6 a. m. to 6 p. m _ 



3,110 





August 4, 6 p. m. to August 5, 6 a. m 



2,400 









2,960 





August 5, 6 p. m. to August 6, 6 a. m 



2,440 







August 6, 6 a. m. to 6 p. m- 



2,990 





August 6, 6 p. m. to August 7, 6 a. m _. . 



2,140 







August 7, 6 a. m. to 6 p. m _. 



2,680 





August 7, 6 p. m. to August 8, 6 a. m_. 



2,040 







It is possible that there is a tendency toward a greater sap flow at 

 night than during the day, since the transpiration will be less at night 

 and consequently a greater hydrostatic pressure will exist in the trunk. 



The following is a record of the daily flow of sap from the palm, all 

 measurements being from 6 in the morning to 6 in the evening, begin- 

 ning at 9.21 on the morning of August 1, 1910 : 



