'£lie Siiiid of Onions. 
649 
seed was germinating, and in the experiments about to be described 
the fungicides were sown in the drills with the seed. 
The first series of experiments was made in boxes in a hot- 
house, when in two cases sulphate of iron and sulphate of coppor 
j were respectively sown with the seed ; in a third case the seed was 
sown alone. AVhere the sulphates of copper and iron were applied, 
they were, on one-half of each plot, sown on the drill, in the other 
half in it. As a result, the application of sulpliate of copper proA'ed 
to be almost as injurious to the young onion plant as to the smut, and 
was quite worthless on this account. In the case of sulphate of iron, 
where it was applied i)i the drill it showed itself to be a fairly good 
fungicide, without causing the disastrous results to the onion plants 
which accompanied the sulphate of copper application ; when sown 
Number 
of grams 
usc'l per 
row 
ATeragc 
number of 
plants per 
row May 11 
Aver.age 
number 
of sound 
onions 
pulled 
August G 
Average 
weiglit \>ci 
row of sound 
onions 
weighed 
August D 
Top"Clrcssc(J with sulj['li£itG of i 
98-8 
11-6 
OcU(.l llCcllLvl Willi ^jt^ilJli' 1 
100-2 
S-4 
SnInVllHo nf cArlinni in rlri I1<s 
in 
Zu 0 
OUipOlUc U£ buuium in qxiils ■ 
e 
0 
no./* 
ao 0 
QQ.O 

Hyposulphite of sodium in drills 
20 
73-2 
11-2 
^ 
~ 
Hyposulphite of sodium . . .1 
10 
90-6 
27 
Flowers of sulphur 1 
10 
106-6 
35-4 
70-8 
Flowers of .sulphur ^ 
5 
100-4 
31-6 
58-i 
10 
-1-4 
17-4 

Sulphate of copper i 
Air-slaked lime J 
0 
81-2 
10 
Sulphate of iron in drills . . 
20 
73-2 
58-6 
Suli)hate of iron 1 
Air-slaked lime 1 
5 
78-2 
38'G 
Average of alternate rows uu- 
94.3 
13-5 
VOL. II. T. S. — 7 
