[447] SCIENTIFIC MANUAL. 161 



arbon and nitrogen. The different portions of the plant con- 

 tain in 100 parts the following respective amounts of nitrogen: 



Lint 0. 54 



Seed 1.96 



Bolls 1.03 



Leaves 2.1* 



Stem.: 1.1ft 



Boots 1.17 



'The ash of the lint will contain in 100 parts 



Phosphoric acid 10.2& 



Potash 21.34 



Lime 26.74 



Magnesia 9.46 



Other mineral matter 32.21 



"There will be contained in one hundred parts of the ash of 



Seed. Bolls. Leaves. Stem. Boots. 



Phosphoric acid 36.76.... 6.87.... 7. 75... ,18.68.... 7.50 



Potash 30.25.... 14 28. ..14.96.... 24.06.... 23.52 



Lime 9.87. . . .27.31. . . .28.14. . . .26.36. . . .28.37 



Magnesia 12.42.... 6.14.... 6.11.... 9.75.... 8.23 



Snlphnric acid 6.48.... 18.25.. ..12.97.... 5.52.... 4.12 



Oxideofiron 1.87.... 5.12.... 5.60.... 1.41.... 6.98 



Chlorine 85.... 4.11.... 4.65.... 6.42.... 8.01 



Soda 2.50.... 8.84.... 9.25.... 6.79.. ..10.64 



Silica ....14.08... 10.57.... 7.01.... 8.63 



"In reviewing these results, we observe that the most important 

 mineral constituents in each and every part of the cotton plant 

 are phosphoric acid, potash, lime and magnesia. In round num- 

 bers, we have in 100 parts of the ash of each part of the plant, the 

 iollowing amounts of these main constituents : 



"In 100 of the ash of 



Lint. Seed. Bolls. Leaves. Stem. Boots. 



Phosphoric acid 10 36 7 8.... 14 8 



Potash '. 21 30 14 15.... 24 24 



Lime 27 10 27 28.... 26 22 



Magnesia 10 12 6 6 ... 10 8 



"Estimated from these per centages and the proportion of ash 

 before stated, as yielded by the several parts of the plant, we have 



in 100 parts: 



Lint. Seed. Boll. Leaves. Stem. Boot. 



Phosphoric acid 0.18.... 1.22 91.... 1.22 56 40 



Potash 0.37. . . .1.02. . . .1.82. . . .8.28 96. . . .1.22 



Lime 0.48 34. .. .3.49. . . .4.25. . . . 1.04 . . . .1.12 



Magnesia .0.17 41 77 92 40 41 



Nitrogen 0.54. . . .1.96. . . .1.03. . . .2.14.. . .1.16. . . .1.17 



12 



