68 a EXPERIMENT STATION. [Jan. 



experimental treatments for insect control to plants, often a 

 considerable distance from his office and source of supplies; 

 visit plants of certain kinds to ascertain at just what time of 

 year certain insects on them change into other stages where 

 control can be effective; and, finally, to keep full records of all 

 this work and bring the results into shape for permanent preser- 

 vation and publication. With such a list of duties (and this is 

 by no means complete) large results speedily obtained can hardly 

 be expected. 



