398 The Philippine Journal of Science 1913 



ume of juice per day than is required in this estimate. Some of 

 the factors concerning the yield of sap per hectare and the cost 

 of production cannot be accurately determined, but we have in- 

 vestigated this phase of the problem as thoroughly as possible, 

 and have allowed ample margins of safety in every case. A mill 

 designed to manufacture sugar from nipa j uice will also be avail- 

 able during that portion of the year when no sap is flowing for 

 refining Philippine sugars in which there is a reasonable profit. 



Every indication is for the establishment of a successful in- 

 dustry, and the unfavorable criticism of H. C. Prinsen Geerligs 6 

 seems unwarranted. 



The Bureau of Science will gladly furnish samples of nipa 

 sugar to any one interested. 



Note. — A further study of the various enzymes present in the nipa palm 

 is in progress to determine, if possible, the exact nature and action of the 

 one responsible for the destruction of sugar. 



'Rep. Eighth Int. Cong. Applied Chem. (1912), 27, 60. 



