418 APPENDIX 



ANALYSIS OF SOIL FROM YAKIMA COUNTY, WASHINGTON 



Per Cent. 



Insoluble matter 71.67 \ ~ K <, 



Soluble silica 5.11/ 7b ' 7b 



Potash 1.07 



Soda 0.35 



Lime 2.00 



Magnesia 1.34 



Brown oxide of manganese 0.04 



Peroxide of iron 6.88 



Alumina 7.91 



Phosphoric acid 0.13 



Sulphuric acid 0.02 



Water and organic matter 2.82 



Total 99.33 



Humus 4.10 



Hygroscopic moisture 4.98 



ANALYSIS OF SWAMP SOIL IN CARTERET COUNTY, NORTH CAROLINA 



Per Cent. 



Silica (insoluble) 1.52 



Silica (soluble) 0.00 



Alumina 0.39 



Oxide of iron 0.15 



Lime 0.36 



Magnesia 0.14 



Potash 0.06 



Soda 0.13 



Phosphoric acid 0.06 



Sulphuric acid 0.38 



Chlorine . 0.02 



Organic matter 87.25 



Water . 9.60 



