PHILIPPINE RAW MATERIALS FOR GLASS MAKING 
By T. Dar JUAN and V. ELiIcaNo 
(From the Chemical Laboratory and the Division of Mines, Bureau of 
Science, Manila) 
THREE TEXT FIGURES 
Some years ago experiments were made by private concerns 
in the manufacture of glass from materials found in Pampanga 
and Tarlac, but the attempts were fruitless. At present there 
is a bottle factory at Santa Ana, Manila, that operates entirely 
with broken glass, or cullet; however, the operation of this 
factory is very intermittent, and its production does not meet 
the demand. 
The imports of glass bottles and other ordinary glassware into 
the Philippine Islands have shown an almost constant increase 
since 1915, and have now reached a point where the establish- 
ment locally of a modern glass factory would appear to be justi- 
fied. Information obtained by the Bureau of Science indicates 
that 15,000,000 split and pint bottles are used annually in the 
Philippines, 10,000,000 of which are returned empty to the soda- 
water and beer factories, leaving a probable market for not 
less than 5,000,000 bottles per year. ‘Table I gives the value of 
Philippine imports from Japan of glass bottles, drinking glasses, 
and lamp chimneys for the last four years. 
TABLE I.—Philippine imports from Japan. 
[Numbers give values in. pesos.] 
1918 1917 1916 191s 
IGW wmnbte hottlew: 222 gee 440,090 | 198,098 | 158,419 | 129, 197 
DRA PMR oo eee 95,057 | 142,076 | 60,268] 52,859 
Lamp chimneys Shes Sabre Bc een Se oe eee 87,210 | 16,445} 20,887 | 17,023 
gu | SAR cm RYE G Re Nw Und Re Pee re ee site OU ce 572,357 | 351,614 | 239,024 | 199,079 
Prices of bottles and other ordinary glassware have increased 
considerably during the past two years, and at present it is very 
difficult to secure them reasonably. In the Philippine Islands 
there are 12 soda-water factories (in Manila), 2 breweries, 440 
465 
i. 
