-65- 



from the present results. From the v;ork of many earlier 

 writers, and also from other results obtained b;- the 

 present writer in other connections, it is safe to say 

 that later growth phases of this seed or other salt 

 combinations or total concentrations, would give very 

 different indications from those here broxight forward. 

 The complexity of the internal and environmental control 

 of developmental and growth processes should be borne In 

 mind when reading the following statements, and it should 

 not be forgotten that the particular lot of seedused, in 

 spite of an effort to secure uniformity ( g, highly desirable 

 feature in a study of this kind ), nevertheless manifested 

 a low degree of uniformity, that is, the seedlings were "^ 

 characterized by a marked degree of Internal variation. 

 The main points brought out in the preceding 

 sections of this paper are summarized below: 



(1) 71 thin the limits set by the 126 different 



solutions used, no significant relation between the compo- 



of 

 sitlon of the medium and percentage/germination of the 



seed was apparent. 



(2) Similarly, no relation was apparent between 

 the percentage of germination and the temperature at which 

 germination occurred. The rapidity of germinatl on was. 



