Division in the Root of Vicia Faba. 



165. 



The conclusions have been derived from many more experi- 

 ments than are indicated by the above tables. Yet those 

 given represent the typical and normal results and also show 

 the mode of experimentation. 



NaCl. — Peas and beans will germinate in NaCl solutions 

 of strengths as high as two per cent. In stronger solutions 

 germination rarely occurs. A solution of two per cent or one 

 per cent has a toxic influence and causes the seedlings soon to 

 shrivel. A one-half per cent to a one-third per cent solution 

 can be regarded as neutral, i. e., a solution which neither 

 retards nor accelerates growth, or one which acts like ordi- 

 nary atmospheric moisture. All solutions weaker than one- 

 third per cent act as stimulants to the seedling and cause an 



