﻿BAGUIO MINERAL DISTRICT. 



Rainfall for 1900-1901 at Baguio, in millimeters. 



213 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1.49 



14.46 



37.08 



8.11 



102. 11 



318. 52 



391. 93 



940. 33 



288. 66 



125. 70 



64.00 



138. 77 



Total, 2,431.16 millimeters = 96.23 inches. 



During the same period the rainfall at Manila amounted to an average of 1,£ 

 millimeters. . 



From September, 1902, to August, 1903, observations were as below: 



Sept. 



Oct. 



Nov. 



Dee. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



602.7 



212.1 



75.9 



24.1 



5.1 



0.0 



16.5 



97.0 



131.8 



168.4 



760.8 



767.9 



Total, 2,862.3 millimeters = 112. 77 inches. 



Care in road construction is one of the principal necessities caused by 

 rainfalls of such magnitudes as are recorded,, and the drainage in the 

 streams creates a problem of control to be considered wherever water 

 power is used. During the rainy season, and especially after one of the 

 heavy rains of a few hours' duration, where 20 inches or more may be 

 recorded in a day, streams which have been but threads of water become 

 rivers of great velocity and power for harm. 



VEGETATION AND TIMBER. 



Open grass land and areas of pine timber constitute almost all of the 

 Baguio district, with the grass lands predominating; an almost insignifi- 

 cant percentage of agricultural lands also exists. A thick stand of cogon 

 grass of 2 or 3 feet or , more in height, which is burned during the 

 dry season, is on the open grass land, and these areas are the cattle ranges 

 of the country. 



The timber is practically all pine, of one species (Pinus insularis 

 Endl.) ; it resembles the loblolly pine of the southern United States very 

 closely in size, form, rate of growth and character of wood ; when it is on 

 the upper slopes and ridges in more open and exposed stands, it is very 

 similar to the western United States yellow 'pine. The forest is quite 

 open, with heavier growths along streams, north slopes and other shel- 

 tered locations. Here the timber attains its best height and growth. 

 Some hard wood occurs, but it is negligible in amount, except on the 

 summit and west slopes of Mount Santo Tomas. 



The timber will average about 100 feet in height and in diameter 21 

 inches, giving a merchantable length of 57 feet, with four logs with a 

 yield of about 550 to 750 board feet per tree, or as measured on a given 

 area, a cut of about 2,300 feet per acre, the entire stand amounting to 

 7,500 feet per acre. 



