‘. 3 VARIOUS FOOD-PLANTS 51 
Fic. 40.—Lima Bean (Phaseolus lunatus, Pulse Family, Leguminose). 
Plant of a twining variety in flower and fruit x #. (Vilmorin.)—The 
plant is an annual closely resembling the Kidney Bean except that 
the flowers are greenish white and the pods are broad, flattened, and 
curved like a scimitar. 
large amount of indigestible material (cellulose) in propor- 
_ tion to the proteid and other nutritive constituents. From 
this it follows that not only are earth-vegetables more bulky 
to store than grains and pulse (and, moreover, cannot or- 
dinarily be kept longer than a few months) but in order to 
