48 ELECTRICITY IN AGRICULTURE 
be ascertained with certainty. On both the experimental 
and the control field in the results given under No. 3 
(sugar beets), the earth had been mixed, and again laid out 
in equal quantity on both fields. A chemical analysis of 
the sugar beets, duly made in a sugar refinery, gave an 
increase of the percentage of sugar from 141 to 15'I, or 
7°24 per cent. of the whole. 
Remarks —This quality of the electric air current (or 
electrical treatment) of increasing the percentage of sugar 
in the sugar beets has occurred in the following cases :— 
Absolute. Relative. 
In Burgundy in 1888 we got an increase of 2°69 = 18°12 
At Durham College in 1902...............05- 2°21 = 18°05 
ae ‘i ITO 3 wtcnainevramnsns o72 = 84 
In Atvadaberg in 1903 ...........506. eee 9 = 134 
» Kryschanowitz in 1903...............0.008 ro = 7°24 
We may regard it, therefore, as sufficiently proved. 
SWEDEN. 
THE EXPERIMENTS IN ATVADABERG.—Summer, 1903. 
We give below a table showing the function of the 
machine during the different months :— 
Working. No. of Not working. 
Month. No. of No. of hours No. of No. of 
days. hours. inday. days A. daysB. 
May (from 23rd) 9 150 16°7 o Oo 
, JUNE vcrieiscess 26 450 173 2 2 1, 2, 3, 18 
July sewsesasoges 23. 369~—Sss«16°6 I 7 3,7,16,17, 20-23 
August ......... 17 311 182 ‘8 6-15-17, 23-27 
Sept. (until r4th) 5 07 19% a 7 2 2, 7-11, 14 
‘ 
A, On account of rain. B, from other causes. 
From September 15th no attempt was made to use the 
machine. 
We see by this table that the machine by the month of 
July begins to show slight irregularities, but that the 
greatest irregularities occur in the latter part of August 
and in September. Therefore it seems to serve a practical 
purpose to divide the plants which were under treatment 
