JACQUES LOEB 



449 



pieces as there are nodes, then all the dormant shoot buds of the 

 stem will grow out into shoots (Fig. 2). The stems in Figs. 1 and_2 

 were cut out at the same time and suspended in moist air in the 

 same vessel. 



The results remain about the same when the basal ends of the pieces 

 are dipped into water, the only difference being that often not only the 



Fig. 3. Same experiments as Fig. 1, only that the long pieces of stem were put 

 with their bases into water. Duration of experiment from September 27 to Octo- 

 ber 22, 1921. All stems were cut from one plant. 



two buds in the most apical node of a long piece of stem grow out 

 but also one or two buds of the node below (Fig, 3). The amount 

 of growth of shoots and roots is also greater in the stems put with 

 the base in water (Fig. 3) than when the stems are suspended in 

 moist air (Fig. 1). When pieces of stem with only one node each 

 are put into water, each piece fonns shoots at its node (Fig. 4). The 



