Subject Index 



177 



Chemistry — Fuels — Continued. 



calorific value of P. I. and other coals 

 from the results of proximate analysis 

 (Cox), iv. A, 171. 



Chemical and physical characteristics of 

 P. I. coal (Cox), vii. A, 1. 



Coal in the Cagayan Valley (Ferguson), 

 iii. A, 535. 



Industrial alcohol and its possibility as a 

 source of power in the P. I. (Cox), iv, 

 A. 232. 



Oxidation and deterioration of coal (Cox), 

 vii. A, 297. 



Philippine coals and their gas-producing 

 power (Cox), i, 877. 



Philippine coals as fuel (Co.x), iii. A, 301. 



Philippine firewood (Cox), vi. A, 1. 



Proximate analysis of P. I. coals (Cox), 

 ii. A, 41. 



Relationship between the external appear- 

 ance and the ash content of P. I. coal 

 (Cox), iii. A, 91. 

 Chemistry, general and physical: 



A solution of oxalic acid and uranium salts 

 as a chemical photometer (Bacon), v. A, 

 281. 



Absorption spectra of ortho- and para- 

 nitrophenol and para-nitrosophenol. 

 New evidence of the quinoid structure 

 of these compounds in alkaline solution 

 (Gibbs and Pratt), vii. A, 371. 



Absorption spectra of phenoquinone, 2, 

 5-dianilinoquinone, • 2,5-dianilinoqiiin- 

 oneanil, and 2,5-dianilinoqmnonediani] 

 (azophenine) (Pratt and Gibbs), viii, 

 A, 51. 



Absorption spectra of various phthalides 

 and related compounds (Pratt), viii. A, 

 399; (Pratt and Brill), ix. A, lOB. 



Action of sunlight upon methyl alcohol 

 (Gibbs), vii, A, 57. 



Catalysis by means of uranium salts in 

 the sunlight (Bacon), ii. A, 129. 



Compounds which cause the red coloration 

 of aniline: I, The effect of oxygen and 

 ozone and the influence of light in the 

 presence of oxygen (Gibbs), v. A, 9. 



Compounds which cause the red coloration 

 of aniline : II. The effect of sunlight 

 in the absence of oxygen and oxidizing 

 influences and a comparison with the 

 behavior of mono- and dimethylaniline 

 (Gibbs), v. A, 419. 



Diethylsuccinosuccinate ( ethyldioxydihy- 

 droteraphthalate) : A study of its consti- 

 tution, some derivatives, and absorption 

 spectra (Gibbs and Brill), x, A, 51. 



Effect of tropical sunlight on the atmos- 

 phere, with some notes on radioactive 

 phenomena in the P. I. (Bacon), v. A, 

 267. 



Methyl salicylate, I: The separation of 

 salicylic aoad from methyl salicylate and 

 the hydrolysis of the ester ( Gibbs ) , iii, 

 A, 101. 



Chemisti-y, general and physical — Continued. 



Methyl salicylate, II: Solubility in water 

 at 30° (Gibbs), iii. A, 357. 



Methyl salicylate. III : The coloration of 

 methyl salicylate and some allied com- 

 pounds in the sunlight (Gibbs, Williams, 

 and Pratt), vii. A, 79. 



Methyl salicylate, IV : The saponification 

 of methyl salicylate, methyl benzoate. 

 and the methyl ether of methyl salicy- 

 late (Gibbs, Williams, and Galajikian), 

 viii. A, 1. 



Mutual influence of hydroxyl and carboxyl 

 and some related groups in the ortho 

 position (Gibbs and Pratt), viii. A, 33. 



Optical efficiency cf tinted glasses In re- 

 lieving eye strain (Pratt), viii, A, 193. 



Oxidation of phenol. The effect of some 

 forms of light and of active oxygen 

 upon phenol and anisole (Gibbe), iv, 

 A, 133. 



The two phthaloximes : A study of their 

 absorption spectra and constitution 

 (Pratt and Gibbs), viii. A, 166. 

 Chemistry — Glass and ceramics : 



Laguna clays (Cox), iii. A, 877. 



Occurrence, composition, and radioactivity 

 of the clays from Luzon, P. I. (Cox), 

 ii. A, 413. 

 Chemistry, inorganic : 



Composition of the fine ejecta and a few 

 other inorganic factors of Taal Volcano 

 (Cox), vi. A, 93. 



Red lead (West), viii. A, 429. 



Silver oxide and silver suboxide (Lewis), 

 i, 439. 

 Chemistry — Leather and glue: 



Economic possibilities of the mangrove 

 swamps of the P. I. (Bacon and Gana), 

 iv. A, 205; (Williams), vi. A, 45. 



Fishery resources of the P. I. Part IV, 

 miscellaneous marine products (Scale), 

 vi, D, 283. 



Leather industry of the P. I. (Gana), x, 

 A, 349. 

 Chemistry, mineralogical and geological : 



Composition of the fine ejecta and a few 

 other inorganic factors of Taal Volcano 

 (Cox), vi. A, 93. 



Occurrence, composition, and radioactiv- 

 ity of the clays from Luzon, P. I. 

 (Cox), ii. A, 413. 

 Chemistry, organic : 



Absorption spectra of ortho- and para- 



nitrophenol and para-nitrosophenol. 



New evidence of the qviinoid structure 



of these compounds in alkaline solution 



' (Gibbs and Pratt), vii. A, 371. 



Absorption spectra of phenoquinone, 2, 

 B-dianilinoquinone, 2,5-dianiIinoquin- 

 oneanil, and 2,5-dianilinoquinonedianiI 

 (azophenine) (Pratt and Gibbs), viii, 

 A, 51. 



Absorption spectra of variona phthalides 



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