114 



The Philippine Journal of Science 



l»lo 



The following statement occurs in the Bulletin of the Imperial 

 Institute,'" London: 



Kukui (LunibaiiK bato) oil belunns to the drying oils typified by linseed — 

 suitable for soap, oil-varnishes, paints, linoleum, and other similar purposes. 



Lumbanp banucalag oil, allowed to stand at room temperature 

 in an extraction flask exposed to the air for some time, became 

 viscous and later settled to a clear straw-yellow gum, which 

 was insoluble in alcohol and kerosene, but soluble in turpentine 

 and alcoholic potash. The turpentine solution dried to a thin 

 transparent film when exposed on a glass plate in the course of a 

 few hours. 



Lumbang banucalag, lumbang bato, and cato oils were placed 

 in small flasks on the steam bath, and dry air was passed through 

 them. The fla.sks were weighed at intervals, and the change in 

 weight was determined. This percentage change, marked — 

 where a loss was found and + where the oil gained in weight, is 

 recorded in Table XL 



Table XI. — Change in weight of lumbang and cato oils when blown at a 



temperature of 100" C. 



r-= 



Serial 

 No. 



Time. 



Lumbang 

 banu- 

 calag. 



Lumbang 

 bato. 



Cato. 





Hours. 



Per cent. 



Per cent. 



Per cent. ' 



1 



1 



—3.80 



—4.66 



-0.32 



2 



2 



—3.98 



—4.85 



-0.38 



3 



3 



-3.99 



-4.98 



-0.38 



4 



4 



—4.01 



—5.02 



—0.3.1 



5 



5 



—3.95 



-5.03 



—0.32 



6 



6.5 



—3.86 



-4.81 



-0.06 



7 



9.6 



—3.79 



-4.26 



-0.06 



8 



12.5 



-3.62 



-3.96 



-4 0.01 



9 



16.5 



-3.51 



3.38 



-1-0.21 



10 



21 



-2.81 



-2.30 



-HO. 46 



11 



22.5 



-2.70 



-2.29 



-1-0.47 



12 



28.5 



-L76 



-L89 



-HO. 48 



IS 



31 



-1.25 



-1.54 



-HO. 60 



14 



34 



-0.98 



-1.80 



-HO. 61 



15 



86 



-0.64 



-LOO 



-HO. 62 



The lumbang oils show a maximum loss in weight at the end 

 of the fourth hour; thereafter the weight increases steadily. 



Bull. Imp. Inst., London (1907), 5, 136. 



