xii. a. 5 Broivn and Argiielles: Soils on Mount Maquiling 231 



per cent for a large portion of the year. There is, however, 

 no indication that this amount is excessive, as the soil is well 

 drained. 



Table VI. — Percentage of moisture in soil in mossy forest (altitude 1,070 

 ?ncters) at top of Mount Maquiling, Laguna Province, Luzon. 



1912. 



November 16 



23.— 



14... 



21.. 



1913. 



January 11 .. 



Depth in centimeters. 



10. 



20. 



30. ; 



258.1 



190.5 



j 



246.7 I 



251.5 



167.5 



121.1 



305.0 



312.4 



129.5 



275.9 



258.2 



123.2 i 



291.0 



188.1 



180.5 



234.5 



352.8 



232.0 



245.0 



268.2 



278.0 



178.6 



149.5 



362.3 



130.6 



234.3 



305.8 



211. 1 



225.2 



289.0 



250.5 



188.il 



206.0 | 





320.2 



319.9 



281.8 



256.0 



255.5 



257.2 



198. S 



198.6 



221.2 



264.9 



232.1 



203.6 



221.8 



257.2 



306.3 



114.6 





167.4 



88.2 



75.1 



176.5 



152.0 



139.2 



July 



August 



September 27. 

 October 4. 



18. 



25. 

 November 8. 



Depth in centimeters. 



237.7 

 273.8 



218.3 

 238.0 

 218.8 

 148.1 

 159.9 

 185.7 

 154.2 

 247.3 

 165.3 

 134.6 



136.8 | 122.0 



214.5 173.6 



185.4 I 173.6 



246.7 251.8 



161.7 I 162.4 



171.0 . 

 137.2 I 



211.8 

 207.6 



257.1 ; 



. ; 173.1 



164.2 j 256.2 



305.5 | 247.9 



186.1 | 302.0 



263.2 i 301.2 



203.6 | 256.5 

 204.8 j 272.1 



The moisture content of the soil in the mossy forest (Table VI) 

 is extremely high. There is only one week when the determina- 

 tions show less than 100 per cent of moisture, and on this occasion 

 this is true of only two of the three depths. Equally as striking 

 as the high moisture content is the variation from week to week 

 and at different depths on the same week. The different depths 

 frequently show a variation of more than 100 per cent on the 

 same day. The high moisture content is apparently connected 

 with the large amount of organic matter found in this soil. The 

 amount of organic matter apparently varies greatly in different 

 situations, and the variations in the water content, shown in 

 Table VI, are probably due more to the places in which the 

 samples were taken than to any weekly change in the moisture 

 content of the soil as a whole. 



The high moisture content shown by the soil in the mossy 

 and the midmountain forests undoubtedly accounts for the fact 



