18 



HATCH EXPERIMENT STATION. 



[Jan. 



Table III. shows the results of these measurements, and 

 Table IV. gives a comparison between the leaves of the 

 plants in the charged and uncharged cases, measurements 

 being made August 15 and August 20, respectively. 



Table III. — Showing the Average of Some Measuremejits of FUmts m 

 Table I., Experhnent I. 



Table IV. — Oiving a Gompariso7i between the Leaves of the Plants in 

 the Charged and Uncharged Cases. 



The results of these experiments shoAv what was readily 

 discernible with the naked eye ; namely, that the length of 

 leaves of the electrically treated plants was quite different 

 from those of the normal or untreated plants, and that the 

 width and length of the leaf blade and the leno;th of the 

 petioles of the plants in the electrically treated case exceeded 

 those of the normal or untreated plants. When comparisons, 

 however, are made of the plants in the electrically treated case 

 of August 15 with those of the normal of August 20, or five 

 days later, it Avill be observed that the width of the blade of 

 the normal exceeded that of the treated one by .1.3 centime- 

 ters, and that the difference in the length of the blades, 



