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DESCRIPTION OF PLATES. 



Plate I. Wild rice growing in water. This seed was submerged at a temperature of 

 32-34° F. for approximately thirteen months. In making the germination test 

 the seed was covered with water and placed in a germinating chamber main- 

 tained at a temperature of 20° C. (68° F.) for eighteen hours, and at 30° C. 

 (86° F. ) for six hours. After the majority of the seeds had germinated the dish 

 was transferred to the worktable of the Seed Laboratory. 



Plate II. Progressive stages in the development of wild rice seedlings; / and g, seed- 

 lings showing the relative position of the growing seedlings and the parent seed, 

 which take a position at right angles to each other when grown normally in 

 water. (Natural size. ) 

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