viii, a, 5 Pratt and Smith: Petroleum Resources 303 



a general statement concerning Bondoc Peninsula. Later in 

 the same year another article 4 on the Tayabas oil fields was 

 published. 



Richmond's 5 investigation of the physical and chemical 

 properties of several samples from Bahay 1 well was cited 

 above. Geo. I. Adams, formerly a geologist in the Bureau of 

 Science, spent two weeks on Bondoc Peninsula in 1909, and his 

 observations were included in a geologic reconnaissance of 

 southeastern Luzon, together with the results of a few days 

 additional field work by the authors of that paper. 



In January, 1911, F. T. Eddingfield and Wallace E. Pratt spent 

 two weeks in a geologic investigation of the southern part of 

 Bondoc Peninsula, and a short discussion based on this work 

 was published later in that year. 7 



During the summer of 1912, Wallace E. Pratt and F. A. Dal- 

 burg were engaged for nearly three months in geologic and 

 topographic field work on Bondoc Peninsula. The results of this 

 work were confirmed and amplified in three weeks of field work 

 by Warren D. Smith and Wallace E. Pratt in February, 1913. 

 These two periods of field work constitute the basis of this report, 

 although the results of previous field work have been drawn 

 upon freely and have facilitated the work. 



SCOPE OF THE PRESENT WORK 



The time spent in the field would scarcely permit of the detailed 

 study of the area covered — 700 square kilometers — even if the 

 country were easily traversed and the geology clearly defined. 

 As it is, the lack of an accurate map, the absence of trails, the 

 prevalence of jungle along the streams, and the heavy growth of 

 cogon and talahib 8 have made it impossible to include detailed 

 or complete information in this report. The vegetation usually 

 conceals the geologic relations, and often renders impossible 

 a proper examination of places where precise information is 

 important. The mere physical effort of cutting through a jungle 

 or of "breaking trail" in the open, where the process involved 

 is one of literally burrowing through the tall rank grass, fre- 



'Ibid. (1907), 4, 19. 



8 hoc. cit. 



•Adams, Geo. I., and Pratt, Wallace E., This Journal, Sec. A (1911), 6, 

 473. Adams's report also appeared as Bureau of Science press bulletin 2 

 which was printed in Philippine Resources (1909), 1, 19, together with The 

 Oilfields of Tayabas, a descriptive article by H. C. Hosty. 



' Eddingfield, F. T., Min. Resources P. I. for 1910, Bur. Set. (1911) 64. 



"Cogon, Imperata cylindrica Beauv.; talahib, Saccharum spontaneum 

 Linn. 



