Growth 



337 



results in the United States have been obtained with lilies 

 of the valley. In many cases, the treated bulbs have been 

 brought into perfect blossom two or three weeks earlier 

 than normal. 



Howard determined that etherization will incite to more 

 rapid bud activity a large number of common deciduous 

 trees. He employed in one interesting series of experi- 

 ments, shoots from 70 species of trees, including many 



EXPERIMENTS WITH 70 SPECIES OF TREES AND SHRUBS 



Interrupted exposure. 



z 



