THE ALCOHOL INDUSTRY. PART I. 

 The daily yield is shown in. the following diagram : 



121 



35 

 TIME IN DA YS. 



Text Fig. No. 1.; — Sap flow of nipa palm. Average of six trees during one season. 



The following data are obtained from the above table : 



Liters. 



Total flow from six trees 260.286 



Greatest total flow from a single tree 49.410 



Lowest total flow from a single tree 36.335 



Average seasonal flow per tree 43.381 



Average daily flow from six trees 3.470 



Greatest daily flow from one tree 1.770 



Average daily flow per tree 0.579 



Although I have much confidence in Sir. William's count of 2,250 producing 

 trees per hectare, I believe it safer to base estimates of areal production upon 

 2,000 trees per hectare. On this basis the yield per hectare per year is 86,862 

 liters. 



I beKeve that both the yield and quality of sap can be improved by 

 the planting of selected seed and by improved methods of caring for 

 the nivales. 



