VICIA FABA 



205 



The weight of the seeds for all varieties of beans is not 

 identical, as may be seen from the following abstracts from 

 M. Balland's book : — 



Algeria 



New Caledonia 



Tunis 



Egypt 



The husks, which are in a proportion of 15 to 16 per cent., 

 have the following composition : — 



The axial portions of the embryos are very rich in 

 nitrogen, and 100 weigh 2-78 grm. 



Water... 



Ash ... 

 Cellulose 

 Fat ... 



Non-nitrogenous matter 

 Nitrogenous matter 



8'oo per cent. 



3-80 



0-62 



4'20 



42-58 



40 -So 



100-00 



The decorticated beans are used to prepare a food flour. 

 This flour contains: — 



Water... 



Ash ... 



Cellulose 



Fat ... 



Non-nitrogenous matter 



Nitrogenous matter 



I2"40 per cent. 



I -So 



1-50 



I 54 

 57-27 

 25-49 



100-00 



The acid content may lie between o"05 and o"09 per cent. 

 The bean is attacked by one of the Hemiptera, Aphis sp. 

 This insect is perfectly black and has transparent wings. It 



