xii. a. 5 Brown and Argiielles: Soils on Mount Maquiling 227 



Table II. — Mechanical analyses of soils from Mount Maquiling, Laguna 

 Province, Luzon. 



[Water-free basis, numbers (five percentages.] 



Classification of soil. 



Diameter of particles. 



Source of soil. 



Grass- 

 land. 



Dip- 



ter- 



ocarp 



forest. 



Mid- 

 moun- 

 tain 

 forest. 



nil 

 0.7 

 0.9 

 4.1 

 8.8 

 12.3 

 4.9 

 39.4 

 29.6 



Mossy 

 forest. 







nil 

 0.9 

 2.2 

 5.4 

 12.5 



nil 

 0.5 

 1.3 

 4.5 

 9.8 



nil 

 nil 

 5.9 

 23.3 

 31.4 

 13.2 

 11.2 

 9.4 

 5.6 



















10.8 1 7.8 

 13.6 | 13.5 

 36.5 41.7 

 19.0 21.4 























MOISTURE CONTENT 

 In Tables III to VI is shown the percentage of moisture in 

 the soil at the different altitudes. 



Table III. — Percentage of soil moisture in grassland (altitude 100 meters) 

 at base of Mount Maquiling, Laguna Province, Luzon. 



1912. 

 December 6 ... 



13 ... 

 20... 

 27.. 

 1913. 



January 3 ... 



10... 



17... 



24 ... 



31.. 

 February 7 .. 



14 .. 

 21... 

 28 ... 



March 7 ... 



14 ... 



21 .. 



28.. 

 April 4 ... 



11.. 



18- 



34.5 



34.7 

 34.6 



39.4 

 35.5 



36.4 

 33.4 

 30.4 

 34.6 

 33.6 

 34.6 



24.2 

 26. 5 

 30.6 



28.3 

 28.3 

 28.6 

 27.7 

 27.1 



1913-Cont. 



May 2.. 



9 



16 



23 



30 



June 6 



20 



July 18 



25 



August 1 



15 



22 



29 



September 5 



26. 



October 3 



24 



November 7 



14 



21 



34.3 



85. 4 

 38.7 

 37.1 



27.8 

 27.1 

 30.3 

 32.8 

 33.1 

 31.9 

 29.9 

 35.1 

 36.0 

 35.7 



34.7 

 36.8 

 35.2 

 40.1 

 40.6 

 36.9 

 33.4 

 31.7 

 34.3 

 42.6 



