66 CHEMISTRY OF PLANT LIFE 



of the presence of sugars (and of the other substances which give 

 desirable flavors to fruits, vegetables, etc.), can have no possible 

 relation to the physiological needs of the individual plant, how- 

 ever. 



It is apparent that the production of these immense stores 

 of reserve food by plants makes them useful as food for animals, 

 and it is, of course, the storage parts of the plants which are most 

 useful for this purpose. This biological relationship needs no 

 further emphasis. 



REFERENCES 



ABDERHALDEN, E. " Biochemisches Handlexikon, Band 2 ... Die Ein- 

 fachen Zuckerarten, Inuline, Cellulosen, . . .," 729 pages, Berlin, 1911, 

 and "Band 8 1 Erganzungsband (same title as Band 2) " 507 pages; 

 Berlin, 1914. 



ARMSTRONG, E. F. "The Simple Carbohydrates and Glucosides," 233 pages. 

 Monographs on Biochemistry, London, 1919 (3d ed.). 



FISCHER, E. "Untersuchung ueber Kohlenhydrate und Fermente, 1884- 

 . 1908," 912 pages, Berlin, 1909. 



MACKENSIE, J. E. "The Sugars and their Simple Derivatives," 242 pages, 

 17 figs., London, 1913. 



TOLLENS, B. "Kurzes Handbuch der Kohlenhydrate, 816 pages, 29 figs., 

 Leipzig, 1914 (3ded.). 



