:M1CAL KUiMI'.NT: 



XlvK 



r.V TLA NT: 



Different parts of the same plant vary in ash content. 



Ash 

 Per cent. 



Ash 

 Per cent. 



Corn grain 1.5 



Corn leaves \ 9.7 



Corn (whole plant) 4.3 



Corn germ 1 4.0 



Corn stover (whole plant ex- 

 cept ears) 4.9 



Corn shucks 3.4 



Corncob 1.4 



Corn bran 1.3 



There is also a variation in the amounts of compoimds in the 

 ash of different parts of the same plant. The percentages of 

 the compounds in this table are figured on 100 per cent, ash of 

 sugar-cane.^ 



Ash of 



leaves 



Per cent. 



Ash of 



stalk 



Per cent. 



Ash of 



roots 



Per cent. 



Potash 



Soda 



Lime 



Magnesia 



Iron oxide 



Alumina 



Silica 



Phosphoric acid 

 Sulphuric acid- • 

 Carbonic acid ■ . 



Chlorine 



Carbon 



Ash 



31-25 

 1. 17 

 590 

 5.11 

 1-45 

 1.03 



30.32 

 7-25 



11.29 



I. ID 

 3.08 

 0.16 

 2.23 



38 23 

 1.30 



5-19 

 5.76 

 I-I3 

 0.25 



15.70 

 5-27 



18.47 

 2.70 

 4-52 

 0.54 

 0.64 



17-39 

 085 



3-45 

 2.61 

 3.60 

 4.70 

 49-52 

 3-99 

 9-15 

 0.45 

 0.98 

 2 30 

 1.87 



From the figures given in the foregoing tables we find that 

 the leaves of plants contain the most ash. The straws contain 

 more ash than the grains. 



Let us see the relation of the ash of roots to the leaves of 

 the same plant. 



Sugar-beet 



Stock turnip 



The per cent, of ash in seeds is generally less than in the 

 plant from which they are derived. "*' 



' Hill, gi, I.onisiaiia Kxperiment Station. 



