XIV, 3 Aguilar: The Lumbang-Oil Industry 285 
SUMMARY AND CONCLUSIONS 
The lumbang oil industry, if properly developed, will become 
a profitable business. 
It is much less desirable for a factory devoted to the manu- 
facture of lumbang oils to purchase kernels than the nuts from 
which to prepare its own kernels, because oil from kernels that 
are being sold in the market is almost always of lower grade 
than that from freshly prepared ones. 
No appreciable change can be noticed in the available oil con- 
tent of uncracked lumbang bato nuts stored for over a year; but 
the content and the quality of the oil of unshelled banucalag nuts 
stored for the same length of time is considerably reduced. In 
the latter case even the shell is insufficient to protect the oil in 
the kernel from oxidization by the air, and shelled kernels dete- 
riorate very rapidly. 
Both oils after expression may be kept satisfactorily in proper 
containers. In view of these facts, a lumbang-oil factory en- 
gaged in the commercial expression of both bato and banucalag 
oils, in order that the maximum yield and best quality of both 
bato and banucalag oils may be obtained, preferably should com- 
mence the season with the expression of banucalag oil and store 
the bato nuts until the other species is finished. 
164891——-3 
