212 



VIGNA CATJANG (COWPEA) 



The chief mineral elements are lime, magnesia, and 

 potash, whilst in the seeds it is potash and phosphoric acid 

 which especially predominate. 



We append herewith the figures obtained from green and 

 grey Madagascan cowpeas : — 



As may be seen, there is little or no difference in the 

 composition of the husks of the.se two varieties of cowpeas. 

 Analyses of other varieties might or might not give similar 

 results to these. However, in relating these figures to the 

 whole crop, a difference of more than 500 grm. is recorded 

 in the case of the grey variety. 



Decorticated Seeds. 



Silica 



Chlorine ... 



Sulphuric aciil 



Pho.sphoric acid 



Lime 



Magnesia ... 



Potash 



Soda 



Oxide of iron 



Carbonic acid, &c. 



White 



In ioo parts 

 of ash 



0-76 

 0-76 

 2-47 

 2577 

 4'47 

 8-02 



44 '30 



3'03 



0-34 

 1008 



In 100 parts 

 of .seeds 



0-028 

 0-028 

 0-092 

 0-964 

 0-167 

 0-300 

 I 657 

 0-113 

 0013 

 0-378 



Grey 



In 100 parts 

 of ash 



0-42 



1-05 



2-96 

 24-66 



3-12 



903 

 4633 



4'34 



056 



7-53 



In lOQ parts 

 of seeds 



0-016 

 0-041 

 O-IIt) 

 0964 

 0-122 

 0-353 



i-Sii 

 0-170 

 0-022 



0-295 



100-00 



740 



lOOOO 



-910 



Unlike the pods, the seeds show dissimilar proportions 

 of potash, lime, phosphoric acid, &c., and these differences, 



