196 ^^'<' I'hilippinf Journal of Science "is 



Mr. E. D. Merrill, botanist of the Bureau of Science, for identi- 

 fication. His illuminating notes are inserted here: 



The fossil remains, mostly remarkably clear leaf impressions, all, or 

 nearly all, represent species still livinp in the Philippines at low and 

 medium altitudes, and an examination of the material shows that the 

 forest in the Bontoc locality was a typical mixed dipterocarp forest such as 

 is found to-day in all parts of the Philippines, where primeval vegetation 

 persists, from sea level to an altitude of about 800 meters. None of the 

 species is found to-day within the limits of Bontoc subprovince, and very 

 few of them are to be found in any part of Mountain Province. None of 

 them is found above an altitude of approximately 800 meters, while the 

 present altitude of the fossil-bearing strata is 1,500 meters. 



DI PTEROC ARPACEAE 



Shorea polysperma Merr. (Tanguile). 



Impressions match leaves from living trees beautifully. Throughout 

 the greater part of the Philippines at low and medium altitudes, ascending 

 to about 700 meters. Common. Endemic. 



Shorea guiso B1. (Guiso). 



Throughout the greater part of the Philippines at low altitudes, abundant. 

 Ascends to at least 500 meters. Endemic. 



Shorea sp. (may be S. eximia Miq.). 



Like the preceding, but less common. Malaya. 



Anisoptera thurifera B1. ? 



Widely distributed at low altitudes. Endemic. The identification must 

 be considered doubtful, but it is certainly a dipterocarp. 



lauraceae 



Beilschmiedia cairocan Vid. (Cairocan). 



Widely distributed in the northern and central Philippines at low and 

 medium altitudes. Ascends to perhaps 500 meters. Endemic. 



Phoebe sterculioides Mess. 



Like the preceding, but in all or most parts of the Philippines at low 

 altitudes. Ascends to 500 meters. 



guttiferae 



Calophyllum blancoi pi. & Tr. (Palo maria del monte). 



Widely distributed in the northern and central Philippines at low and 

 medium altitudes. Ascends to 600 meters. Endemic, unless the same is 

 a Malayan species. 



tiliaceae 



DiPLODiscus paniculatus Turcz. (Bolobo). 



Throughout the Philippines at low altitudes, ascending to 500 meters. 

 Common and abundant. A monotypic, endemic genus. 



