SAND-LIME BRICK. 333 
ANN 
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Fic. 1.—The vicinity of Manila (1 millimeter equals 1 kilometer). if 
. . ora . 7 La 
TABLE V1I.—Ultimate chemical composition of Binangonan and u 
Montalban limestones. Fst 
| i } 
| Lime- Lime- rad 
stone stone | \ 
Constituent. from from 
Binan- | Montal- in 
gonan. ban. i 
i 
Per cent. | Per cent. ii 
iWateriatil10%C@ Bates ss tases ited Sa ea 0.16 0.25 
Mica S1@)2) seca aa ae poe ee Ren SA Se ee alk 1.12 0. 94 \ 
Iron and aluminum oxides (R2Os) ---.------------------------- 0.15 1.14 | a 
GChildiisten Gpstelta (GVO) nae sa *53.78 | 64.61 i 
Magmiesisl (Iie () Secs se amas ened EET ee estes 1.19 0.22 AY 
Combined alkalies (K20 + Na20) ------------------------------ 0.77 0. 56 fi 
SHlphurcanhy dridel(s Og) eas aan nee eee ee trace | trace " 
Toss\byniemitione we ss= fos) Mopar eee Sate ee eles ae 43.15 | 42.79 M 
Lime calculated to calcium carbonate (CaCOs) ---------------- 96. 03 97. 52 i 
a Analyzed by Forrest B. Beyer. 
