144 Electrical Treatment on Potato Crops. 



when it was warm with bright sunshine, for two, three, or four 

 hours in the evening. Total hours the discharge was applied — 

 413. 



The varieties of potatoes planted were : — Ringleader, 

 Windsor Castle, Golden Wonder, Great Scot. 



Owing to applying too late for seed tubers of the Ringleader, 

 which variety I was anxious to have for trial, I was only able to 

 obtain the third-grade size, which in many cases were little larger 

 than an ordinary marble. 



From the commencement of the application of the discharge 

 a distinct difference was observed between the two plots, the crops 

 under the electrified wires being, from the commencement of 

 growth up to the time of ripening, distinctly in advance of those 

 outside the influence of the charged wires. The tubers were 

 ready for lifting quite a week earlier; also the difference in the 

 height of the haulms and greater luxuriance of leaf-growth was 

 very marked. 



The following tables give the weights per acre of the crops 

 lifted in the experimental and control plots : — 



EXPERIMENTAL PLOT. 



Variety. Tons. Cwts. Qrs. Lbs. 



Ringleader — 



Total ... 1 1 ] 4 2 0^ No disease. 



Golden Wonder — Tons. Cwts. Qrs. Lbs. 



Seed size 7 19 2 



Under 1^ inches ... 15 24 J 



