4 BULLETIN 634, IT. S. DEPABTMEXT OF AGBICULTUEE. 



An attempt to determine galactans on these samples was made, but 

 the results are omitted, since in no case were the results over 1 per 

 cent and on attempting to recover the mucic acid from the precipi- 

 tates none was found. 



The methods of analysis were those of the Association of Official 

 Agricultural Chemists, as given in the journal of that association. 

 The starch was estimated by the diastase method. 



The results on sample Xo. 2 show that no change which could be 

 detected by the analyses made was caused by soaking. 



These analyses may well be compared with those of different par's 

 of 'the corn kernel made by Hopkins, Smith, and East * in their study 

 of the structure of the corn kernel. In this work three samples of 

 corn differentiated by the amount of protein contained, namely, low, 

 medium, and high, were examined. The one containing the medium 

 amount of protein has been selected for comparison with kafir, since 

 it is nearest the normal. They divided the horny endosperm into 

 two parts, "horny gluten'" and ''horny starch." These analyses have 

 been combined so as to compare with kafir "horny endosperm." 

 They also divided the starchy portion into "crown starch" and "tip 

 starch." These have also been combined to correspond to kafir 

 "starchy endosperm." 



The following table compares the parts of the kafir kernel with the 

 corresponding parts of the corn kernel: 



Table III. — Comparison of kafir and corn separations. 



Material. 



Com hulls 



Kafir bran 



Horny endosperm: 



Corn 



Kafir 



Starchy endosperm: 



Corn 



Kafir 



Germ: 



Corn 



Kafir 



Kernel. 



Per cent. 

 7.39 

 6.1 



55. 59 

 48.9 



25.49 

 35.0 



11.53 

 10.0 



Ash. 



Ether 

 extract. 



Protein. 



Per cent. 

 0.79 

 2.0 



.44 

 .3 



.26 

 .3 



9.90 

 13.2 



Per cent. 

 0.89 

 6.8 



1.15 

 .7 



.24 



34. 84 

 31.5 



Per cent. 

 3.96 



4.8 



11.85 

 14.5 



7.84 

 11.66 



19.80 

 19.3 



Carbohy- 

 drates. 



Per cent. 

 94.36 

 86.4 



86.56 

 84.5 



91.66 

 87.3 



35.46 



36.0 



The figures for percentage of the various parts of the corn kernel 

 are taken from Table III on page 87 of the Illinois bulletin, and those 

 for the composition are taken from Table I, on page 83. 



In comparing the analyses of kafir bran with corn bran, or corn 

 hulls, the most noticeable difference is in ether extract. The kernel 

 of corn is developed under the protection of husks, but the kernel of 

 kafir grows in a somewhat exposed condition. When measuring the 

 kernels it was found that they seemed slippery and it was difficult to 

 hold them with a forceps. This led to the belief that the kernel 



i Illinois Agr. Exp. Sta. Bui. 87, Aug., 1903, p. 83. 



