AND HORTICULTURE, 49 
into two groups. In the first group come corn, rye, 
barley, oats and meslin, and in the second group the 
root crops—potatoes, sugar beets, carrots and beets. The 
former were reaped in the month of August (oats the 14th 
September), the latter in the first week of October, except 
the potatoes, which were reaped in the middle of September. 
The most important time of development comes, for the 
former in the months of June, July and August, for the 
latter in July, August and September. The machine 
worked very well during the months of May, June and 
July; but during August and September together for 
not more than 22 days out of 61, of which 17 
days were during August and only five days during 
September. These circumstances appear clearly from the 
tabulated results. ; 
For each kind of plants three squares of 16 m?, situate as 
shown in Fig. 4 (middle part), page 20, were chosen for the 
experimental field, and three squares situated in the same 
way for the control field, within a distance of about 5m, 
In each pair of squares (except for the rye, which was 
autumn corn) the earth from both fields was dug to a depth 
of 30cm., mixed, and laid out afresh in equal quantity on 
each square. 
The machine acted upon an area of 4'03 hectares, and 
the large extension of the wire net in these experiments 
will give them a particular interest. . 
The First Group—Corn. 
From Atvidaberg I got samples of all species of corn 
which had been under electrical treatment. There were 
two samples for each species, one taken from the harvest on 
the experimental field, the other from the harvest on the 
control field. The weight of the sample was about 8ogr, 
All the flattened and half grains, and of the oats and 
barley all those without a shell, having been picked out, 
E 
