PULSE 



41 



Fig. SO.^Shagbark Hiekorj- (Canja uUm. Walnut Family, J uglandacea:) . 

 A single leaf. Staminatc flower-cluster. Staminate flower, under side, 

 enlarged. Twig bearing a single fruit. Nut. (Britton and Brown.) — 

 A large tree becoming 36 m. tall; hark shaggy in narrow plates, gray; 

 young tii-igs and leayes slightly hair.^- becoming smooth; flowers green- 

 ish; fruit greenish brown; nut almost white. 



ill that the nutritive part is contained within the seed, 

 but differ from them in that the seeds ripen in a rather thin- 

 walled potl which opens at maturity by splitting in halves 

 from end to end. 



The very large amount of nutriment in proportion to 

 bulk, together with the small percentage of water and oil 

 (see chart) renders beans and peas among the very best 

 foods for storage, and particularly adapts them for use upon 

 long voyages. That the}" are highly nutritious is shown 

 by the large amount of proteid they contain. This, however, 

 is found to be of a sort resembling the proteid of cheese; and 

 is not so easily digestible as that found in cereals. 



35. Earth-vegetables we shall find to be a convenient 



numerals being added to distinguish them. Thus in the above refer- 

 ence to the pictures of kidnev-bean,. Fig. 39 is understood as applying 

 to Fig. 301 and Fig. 30II. 



