94 The Philippine Journal of Science 



Pratt, D. S., and Gibbs, H. D. 



The absorption spectra of phenoquinone, 2,5-dianilinoquinone, 2,5-di- 

 anilinoquinoneanil, and 2,5-dianilinoquinonedianil (azphenine), viii, 

 A, 51. 

 The two phthaloximes : A study of their absorption spectra and consti- 

 tution, viii, A, 165. 

 Pratt, D. S., and Rosario, J. I. del. 



Philippine fruits: Their composition and characteristics, viii, A, 59. 

 Pratt, D. S., Thurlow, L. W., Williams, R. R., and Gibes, H. D. 



The nipa palm as a commercial source of sugar. A consideration of 

 the principal dii!iculties encountered in collecting and preserving 

 nipa-palm sap, viii, A, 377. 

 Pratt, Wallace E. 



Geologic reconnaissance in Caramoan Peninsula, Camarines Province, 



X, A, 303. 

 Geology and field relations of Portland cement raw materials at Naga, 



Cebu, ix. A, 151. 

 Iron ore on Calambayanga Island, Mambulao, Camarines, x. A, 323. 

 On the occurrence of petroleum in the Province of Cebu, x, A, 281. 

 Petroleum and residual bitumens in Leyte, x. A, 241. 

 The eruption of Taal Volcano, January 30, 1911, vi. A, 63. 

 The location of artesian wells in the P. I. from a geologic viewpoint, 



X, A, 231. 

 The mechanical analysis of soil, vi. A, 35. 

 The persistence of Philippine coal beds, x. A, 289. 

 See also Adams, G. I., v. A, 143 ; vi. A, 449 ; Dalburg, F. A., ix, A, 201. 

 Pratt, W. E., and Lednicky, V. E. 



Iron ore in Surigao Province, x, A, 335. 

 Pratt, W. E., and Smith, W. D. 



The geology and petroleum resources of the southern part of Bondoc 

 Peninsula, Tayabas Province, P. I., viii, A, 301. 



R 



Radlkoper, Ludwig. 



Enumeratio sapindacearum philippinensium novarumque descriptio, viii, 

 C, 443. 



Sapindaceae novae philippinarum insulze Polillo, vi, C, 181. 



Simarubacearum genus novum philippinense, vi, C, 365. 

 R AFFRAY, A. 



Catalogue des pselaphides (coleopteres) des iles Philippines, ix, D, 451. 

 Ramirez, Manuel. 



.See Mendoza, M. P., iii. A, 293. 

 Raquel, Alfonso. 



See Barber, M. A., x, B, 177. 

 Rehm, Heinrich. 



Ascomycetes philippinenses collect! a clar. C. F. Baker, viii, C, 181. 



Ascomycetes philippinenses, viii, C, 251, 391. 

 Reibling, Walter C. 



A bonus system for the purchase of Portland cement, viii, A, 107. 



Concrete construction in Manila and the P. I., v. A, 117. 



Natural cement versus brick; Iwahig penal colony raw materials, ix, 

 A, 163. 



See also Cox, A. J., vii. A, 317. 



