INDEX. 



457 



oxygen of, 226 ; lack of uniformity of 

 commercial, 179 ; limonene in, 205, 207 ; 

 liquid products given off during distilla- 

 tion of, 209 ; mode of production of, 180 ; 

 oxidation of, by the air, 219 ; presence of 

 pinene in, 205 ; products given off by, 

 204 ; size of, 182 ; steam distillation of 

 the crude resin, 185 ; terpenes contained 

 in, 205 ; the study of, 171 ; used in manu- 

 facture of varnish, 204 ; value of annual 

 export of, from Philippine Islands, 177. 



Manila elemi, 171. 



Manila oils, 263. 



Manila resin, use of, for oleoresinous var- 

 nishes, 196. 



Mang-kuda, a Malayan dye, 444. 



Mangifera indica L., 444. 



Marine conglomerates, of southwestern Lu- 

 zon, 69. 



Mariquina gravel, 124. 



Masbate, amount of, and location of cogon 

 grass in, 255 ; gold in, 331. 



Mataling river, in Mindanao, 350. 



Mayon volcano, 313. 



Methylamine, a reaction product of methyl- 

 aniline, 435. 



Methylaniline, absorption spectra of, 426 ; 

 sealed in' atmospheres of hydrogen and 

 carbon dioxide at different pressures, 431 ; 

 undergoes chemical change in atmosphere 

 of hydrogen, 434. 



Methylene blue, a coal-tar color, 440. 



Melanea denticulata Lea., 328 ; M. laterita 

 Lea. ; M. woodwardii Mart., 328. 



Metadiorites, 323. 



Metals, of the Philippine Islands, 330. 



Metamorphic rocks, 323. 



Michelia alba L., 447 ; M. champaca L., 

 263, 443, 447. 



Mindanao, Cordillera of, 355 ; coal found in, 



332 ; geologic reconnaissance of, 345 ; 

 gold in, 331 ; lakes of, 356 ; oil seeps in, 



333 ; plains of, 346 ; small rivers of, 349 ; 

 volcanoes of, 358. 



Mineral resin, 180. 



Mineral waters of the Philippine Islands, 

 334. 



Mirror, liquid concave, 19. 



Monadnocks, of Sulu, 361. 



Mono- and dimethylaniline, behavior of, 419. 



Morin, 443 ; old fustic or, a natural Philip- 

 pine dye, 439. 



Morinda citrifolia L., 444 ; M. bracteata 

 Roxb., 444 ; M. umbellata L., 444. 



Morio echinophora Linn., 328. 



Mortar tests, in concrete construction, 131. 



Morus tinctoria L., 440. 



Mount Apo, rocks from, 321. 



Mount Mariveles volcano, 313 ; origin and 

 age of, 314. 



Mount Mayon, 313 ; origin and age of, 314. 



Mount Pinatubo, 321. 



Mountain Province, Luzon, salty spring found 

 in, 333. 



N 



Natica callosior Mart, 328 ; N. globosa 



Chem., 328 ; N. marochiensis Gmel., 328 ; 



N. ovum Mart., 328 ; N. rostellina ( ?) 



Jenk., 328. 

 Narra wood, coloring matter of, 448. 

 Narrin, 450. 

 Nassa cassiculata Lam., 328 ; N. verbeeki 



Mart, 328 ; N. punctata Smith., 328. 

 Nummulites, 79. 

 Nummulites niasi, 327. 

 Nummulites niasi Verbeek, 315, 328. 

 Nonmetals, of the Philippine Islands, 332. 

 Notes, on radioactive phenomena in the 



Philippines, etc., 267. 

 Novaliches Sand, 133. 



o 



Ocimum sanctum L., 261. 



Odontocyathus sp., 328. 



Oil, of Canarium villosum F. Vill., 257 ; of 



Cinnamomum mindanaense Elmer, 257 ; 



of Curcuma longa L., 262 ; of C. zedoaria, 



261 ; of Michelia champaca L., 262 ; of 



Ocimum sanctum L., 261 ; of Ylang-ylang, 



265 ; of Zingiber officinale Rose, 259 ; 



refined petroleum, 6. 

 Oils, Manila, 263 ; reunion, 265 ; synthetic, 



263. 

 Oil seeps, in the Philippine Islands, 333. 

 Oleoresins, of Pinus insularis Endl., 229. 

 Orange-yellow extract, 443. 

 Orbitoides (Lepidocyclina martini Smith), 



328. 

 Orbitoides richthofeni sp. nov., 79. 

 Ostrea sp., 328. 

 Oxalic acid, a solution of, as a chemical 



photometer, 281 ; solutions, absorb rays 



of ultra-violet spectrum, 283. 

 Oxidation, cause of red color in aniline, 9, 



10 ; the oxidation of Manila copal by the 



air, 219. 

 Oxidizing influences, effect of sunlight in 



absence of, 419. 

 Oxygen, the effect of, and ozone, 9 ; effect 



of sunlight in absence of, 419. 

 Ozone, the effect of oxygen and, 9. 



Pachyseris cristata Mart., 328. 



Pagsainguin, 257. 



Paper, cost of manufacture of paper pulp, 

 244 ; cost of the raw material in making, 

 from bamboo, 242 ; equipment necessary 

 for making paper pulp, 245 ; labor, in 

 producing paper pulp, 242 ; preparation 

 of, from lalang, 254 ; quantity of bamboo 

 available for making, 243 ; soda process 

 on bamboo in manufacture of, 241 ; suit- 

 ability of Philippine fibers for making of, 

 233 ; white sulphite bamboo fiber in ma- 

 nufacture of, 241. 



Paper pulp, from bamboo, 233, 234. 



