PHILIPPINE SOILS. 



287 



No data are at hand from other places in the Islands, but it is believed 

 that were they available these two factors would be shown to maintain 

 approximately the same ratio. 



There remains for consideration in the climatic conditions of the 

 Philippines the important factors of rainfall and humidity. The value 

 of the former is given in Tables IV and V. 



In Table IV I have segregated all those weather stations which have 

 a distribution of rainfall similar to that of Manila and in Table V those 

 which have a rainfall more or less uniformily distributed throughout the 

 year. These two tables conclusively show well marked wet and dry 

 seasons for the stations named in Table IV and the absence of such 

 variation in Table V. In the two tables are included records of prac- 

 tically all the stations of the Philippine Weather Bureau.^ When these 

 stations are located on a map, a straight line drawn lengthwise through 

 the Mountain Province to Laguna de Bay and thence to Iloilo exactly 

 divides the stations given in Table IV from those given in Table V as 

 shown in Fig. 3." 



' I have omitted only those from wliieh the data were so incomplete as to be 

 of no value. 



° I know of no record of precipitation of measurements made in Palawan. 

 Records of the rainfall in Borneo are not complete, but for the years 1909-10 

 I have collected the following: 



Rainfall in Borneo, 1909 and 1910. 

 [Numbers represent millimeters.] 



station and eleva- 

 tion (meters). 



Jan. Feb. 



Mar. Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Kotabelud 



Kudat 



30 



15 









 

 20 

 10 

 15 

 

 400 







50 



50 



60 











Rainfall In th 



e State 



of No 



rthBo 



rneo, 1909." 









108 



148 



52 



114 

 115 

 13 



245 

 255 

 150 



253 

 293 



148 



39 

 384 

 238 



234 

 292 

 118 



48 

 128 

 139 



115 

 498 

 330 



127 

 510 

 185 



147 

 794 

 204 



971 

 53 



389 

 95 



Tawao - 



Lawas _ . 



Average ra 



infall 



in Sar 



iwak, 



1909-1 



}. 





210 

 2.53 

 248 

 351 

 416 

 711 

 »788 



446 

 445 

 461 

 426 

 405 

 760 



497 

 290 



"298" 

 567 

 506 



«651 



527 

 559 

 616 

 M23 

 533 

 704 



288 

 275 

 228 

 212 

 218 

 129 

 <^257 



289 

 360 

 411 

 313 

 149 

 71 



"426 

 288 



270 



303 

 334 



410 

 258 

 251 

 293 

 321 



237 

 264 

 210 

 231 

 184 

 79 



230 

 398 

 236 

 262 

 181 

 182 

 113 



183 

 172 

 189 

 115 

 87 

 90 



i'476 

 468 

 183 

 286 

 292 

 223 

 318 



292 

 320 

 205 

 284 

 138 

 134 



381 

 294 

 '•230 

 283 

 318 

 312 

 348 



276 

 298 

 264 

 305 

 120 

 186 



501 

 312 

 223 

 341 

 273 

 379 

 312 



324 

 355 

 374 

 366 

 220 

 164 



435 

 230 



'"m 



380 



"§18" 



324 

 288 

 341 

 312 

 229 

 296 



300 

 279 



n94 

 514 

 465 



= 760 

 572 



450 

 368 

 461 

 423 

 491 

 721 



Limbang« 



Baram'= 



Sadong Mines'^ 



Sarawak Museum . 

 Goebilt'.- 



"l98" 



484 



'320 



316 

 354 



344 



358 



146 



40 



229 



260 



248 



'•■362 



303 



272 

 287 

 244 

 232 

 122 



Matang Reservior- 

 Sungei Tengak 

 Estate 



Bau . 



Bibi 



Dahan Estate 



Lundu 



Samatan " 





References' 



{ 





40 72 



UO 91 



UO 112 



S9 141 

 40 135 



39 162 



40 159 



39 182 



40 183 



39 214 



40 203 



39 11i 

 1,0 224 



39 247 

 iO 244 



39 271 



40 264 



40 28 

 40 273 



« state of Nort% Borneo Official Gazette (1910), 21, 104, 178, and 181. 



>> For 1909 only. 



= For 1910 only. 



4 403 millimeters in 1909. 



"= 477 millimeters in 1909. 



^Sarawak Official Gazette (1909), 39; (1910), 40. Figures in italics give volume and 

 the other figures give the number of the page. , 



The precipitation at the above stations indicates that at some places in Borneo there 

 is a noticeable diminution of the rainfall during certain seasons though on the whole the 

 numbers given most nearly agree with those for the eastern portion of the Philippine 

 Archipelago. With the data at hand, it is not possible further to indicate the direction 

 of the line which differentiates the types of rainfall in the Philippines. 



