THE HORTICULTURAL SOCIETY OF NEW YORK 



5^ — -The chemical tests of the flowering plants and vegetable 

 seedlings contained approximately the same amount of chlorophyl 

 in both the plants under the lamps and those raised under sunlight 

 only. 



6 — The economic value of this experiment to commercial grow- 

 ers depends upon the cost of engineering the project and in main- 

 taining the installation at maximum efficiency to bring the evident 

 effect of the artificial light on production. 



4.3 



