494 SMITH. 



Fort Pikit, which dates from the Spanish regime, like Eeina Eegente, 

 surmounts a limestone monadnock, but the latter is much liigher than 

 the one on which the former fort is situated. This is the farthest port 

 on the Rio Grande. 



From Fort Pikit we ascended to the end of navigation in the light- 

 draft, stern-wheel steamboat which is used on the river. This point is 

 some 50 kilometers beyond the fort, at the junction of the Kabacan with 

 the Pulangui Elvers, the total ascent by steamboat being almost 200 

 kilometers. 



The first three days of our march were through mud; we were con- 

 tinually forced to wade rivers, beeaiise we were following in the bed of 

 the main stream, walking along the banks being out of the question, the 

 first stop being at the junction of the Malabiil and the Kabacan Elvers. 

 We continued along the Malabul in a winding course, but making only 12 

 kilometers in a straight line in one day. A coarse, gritty sandstone and in 

 places a typical conglomerate appear occasionally along the banks. 



On the third day after we left Pikit, and srs days' march from Davao, 

 at an elevation of 365 meters, we reached the house of Datu Inkal, a 

 Manobo chief. The geology in this region is not very prominent. The 

 trail generally leads through dense underbrush. All the streams are 

 filled with large bowlders of extrusive rock, evidently from the Matutan 

 Eange just ahead. The latter is represented on the Jesuit map as a 

 long, continuous and rather formidable Cordillera, but it is nothing of 

 the kind and, except for Mounts Apo and Matutan, it is merely a broken 

 line of hills and quite low in several points. 



The journey for the next few days can best be given by extracts from 

 the diary. 



December 16, 1907 : Left Datu Inkal's at 7 a. m. Continued through jungle 

 and over rolling country to an elevation of 580 meters where the trail goes through 

 the pass. Halted and made camp beside a small stream. Kainy weather and 

 leeches made traveling very disagreeable. The feet of the cargadores were bleeding 

 freely, but they did not seem to mind it. 



December 17, 1907 1 Broke camp at 7 a. m. Cloudy, elevation by barometer 

 472 meters. Crossed the Dalapnay Eiver this morning. All the rocks for miles 

 around this point appear to be similar, either fine-grained felsites, basalts and 

 andesites or feldspar prophyries. Very little can be said geologically about this 

 country at this time, as so little of it can really be seen. It apparently is extremely 

 recent. Halted at noon at the Dalapnaj' River at a Manobo house and spent the 

 afternoon of the 17th drying out our effects. Elevation at this point 412 meters. 



December 18, 1907: All of this day we are going downhill through dry woods, 

 for the most part consisting of small trees and little or no imderbrush. Occasional 

 basalt and andesitic bowlders are seen. The difference between this side (eastern) 

 and the western side of the range is almost entirely due to the fact that the 

 prevailing winds, moisture-laden from the Sulu Sea, give up their moisture on 

 the western side of the mountains and the winds blowing off the Pacific lose much 

 of theirs on the seaside of the mountains east of Davao. The appearance of these 

 eastern-slope forests is not greatly unlike that of those in the Temperate Zone. 



