PHILIPPINE SOILS. 323 



Table XIV." — Effect of oven drying on the meclianical composition of soil — Contd. 



Soil. 



Num- 

 ber 



9 

 •9 

 10 



11 

 '11 



12 

 «12 



13 

 =13 



14 

 "14 



15 

 «15 



16 

 "16 



17 

 "17 



Color. 



Depth 

 in cm 



Light brown 

 loam. 



0-15 



Black*. 



Light brown. 

 Brown clay- 

 Brown loam. 



Sticky clay .. 

 Dark brown 



loam. 

 Brown 



0-15 



0-15 

 0-15 

 0-15 



0-15 

 0-15 



0-15 



Crop usually 

 grown. 



Air dried.'' 



Rice, corn. 



Grass, rice. 



Rice 



Rice, corn 



Sugar cane, 



rice, corn. 



Rice, corn 



Tobacco, rice, 



corn. 

 Rice, corn' 



(0 

 Dark brown. 



15-30 



Rice, corn. 



C) 

 Dark loam . 



0-15 

 15-30 



Sugar cane, rice, 

 corn. 

 do 



30-60 



do. 



do. 



Sand, 



1.0 to 



0.1mm 



14; 10 



14.36 

 24.15 



21.11 



9.98 



13.27 



29.63 

 17.75 



26.75 

 25.30 

 22.66 

 23.10 

 20.40 



17.17 

 17. 52 

 23.52 



Very 

 fine 

 sand, 



0.1 to 

 0.05 

 mm. 



12.90 



11.96 

 15.64 



8.65 

 10.43 

 13.71 



9.40 

 16.55 



13.38 



12.50 



9.05 



8.28 

 8.45 



9.68 

 9.82 

 6.57 



Silt, 



0.05 to 



0.01 



mm. 



20.05 



21.68 

 10.97 



17.44 



9.28 



17. 24 



13.51 

 13.56 



10.62 

 12.32 

 10.52 

 12.36 

 23.70 



12.25 

 12.41 

 10.05 



Fine 

 silt, 0.01 

 to 0.002 



mm. 



29.96 



29.64 

 25.35 

 25.81 

 23.90 

 32.20 

 31.01 



25.75 

 32.94 



23.78 

 23. 77 

 22.58 

 21.26 

 30.56 



27.00 

 26.62 

 17.96 



Clay, 



< 0.002 

 mm. 



14.02 



14.29 

 12.16 

 11.89 

 19.60 

 27.10 

 15.46 



11.29 

 11.91 



15.28 

 15.61 

 20.74 

 20.42 

 9.94 



20.41 

 18.80 

 23.85 



Total, 

 includ- 

 ing 

 mois- 

 ture.'' 



100. 39 



100.12 

 99.58 



100. 97 

 101. 09 

 101. 25 



100. 38 

 101. 56 



99.75 

 100. 01 

 100. 21 

 100. 24 



100. 00 



100. 47 



99.92 



Brown loam. 



0-15 

 0-15 



(J) 

 C) 



1.5-30 

 15-30 

 30-50 



Sugar cane ' 

 Sugar cane. 



._do 



_.do 



13.77 

 12. 58 

 19.06 

 18.73 

 23.06 

 21.94 

 16.72 

 15.58 

 14.00 

 13.72 



18.17 



16.66 



16.38 



15.44 



7.87 



9.78 



14.55 



12.74 



7.63 



8.13 



12.32 



13.20 



15.29 



14.48 



10.88 



8.87 



6.00 



8.13 



10.45 



9.20 



37.20 

 37.93 

 32.02 

 34.05 

 27.27 

 28.58 

 30.12 

 32.26 

 26.03 

 26.81 



10.18 

 11.60 



18.39 

 18.38 

 20.69 

 20.99 

 27.23 

 27.49 



99.74 

 99.70 

 99.70 



100. 16 

 100. 27 

 100. 05 

 101. 29 

 100. 55 

 100. 67 



» All clay percentages were obtained by direct determination. 



^ Moisture separately determined. 



= Duplicate. 



* This soil is more than 1 meter deep and evidently contains soluble constituents. 



" Previous coffee. 



' Same location as No. 8. 

 s Same location as No. 10. 

 meters of subsoil. 



» Subsoil of No. 10. 

 ' Same location as No. 14. 

 1 Same location as No. 14. 

 " Subsoil of No. 14. 



Consists of about 5 centimeters of surface and 10 centi- 



True subsoil excluded from this sample. 



A comparison of the relative percentages of mechanical separates given in 

 the above table shows that less of the finer grades and more of the coarser grades 

 are obtained when the sample has been dried at 110°. In some cases the variation 



