CHEMICAL COMPOSITION OF MAIZE GRAIN 665 

 Table CVIII. 



CHAP. 

 XIII. 



Dent maize; average of 86 analyses 

 Flint „ „ „ 68 



Sweet ,, „ ,, 28 „ 



Pop ., >, ,, 4 



Flour ,, ,, ,, 5 ,, 



Average of 20S analyses of all varieti< 



ProLein. 



Crude 

 1 Fibre. 



Nitrogen- 

 free 



10-3 



10-5 

 n-6 



II'2 



"•4 

 10-5 



2 'o 

 2'I 



70-4 



70-1 

 66-8 

 69-6 

 70-2 

 69-6 



Fat. 



5-0 

 5-0 



8-i 

 5'2 



5"5 



5'1 



621. Composition of Mai.ce Grain Grown in Different Lo- 

 calities. — The cultivation of maize under the different telluric 

 and climatologic conditions of different parts of the country 

 does not appear to materially affect its composition. As the 

 result of over 200 analyses of maize grain, from different parts 

 of the United States, Richardson (1) found it to be "very con- 

 stant in its composition, within narrow limits". 



A very interesting" and valuable series of twenty-seven 

 analyses has recently been completed by Mr. H. J. Vipond, 

 Chemist of the Department of Agriculture, Union of South 

 Africa, to determine the percentages of — 



Protein 



Ash 



Lime 



Magnesia 



Sulphuric Acid 



Phosphoric Acid 

 in samples of various breeds of maize grown in parts of the 

 country with different soils and widely different climatic con- 

 ditions. The result is given in Table CIX following. The 

 suggestion had been made in the public press that South 

 African grown maize appeared to be less nutritious than that 

 grown in the United States, and that the climate or soil might 

 cause a difference in the chemical composition. The results 

 of these twenty-seven analyses clearly prove that South African 

 maize is usually quite as rich and sometimes richer in nutrients 

 than that grown in the United States and subjected to the same 

 analysis. 



Protein : the extreme range of variation in protein-content 

 was 472 per cent or from 8-23 per cent to 12-95 per cent. 



