13 
25 gallons of water. Mixture No. 5 is practically eau celeste in dry 
concentrated form. 
(h) Ammoniacal copper carbonate solution, 3 ounces copper carbon¬ 
ate dissolved in 1 quart of ammonia, and diluted with 22 gallons of water. 
II. The value of a mixed treatment, consisting of three early treat¬ 
ments of the Bordeaux mixture and three late sprayings of the ammo¬ 
niacal solution. 
III. The value of early against late sprayings. By early is meant the 
first treatment when the buds begin to swell, and by late the first 
treatment when the grapes are the size of bird shot. 
EXPERIMENTS AT GREENVILLE, SOUTH CAROLINA. 
The work at this place was conducted A. M. Howell, who is to be 
commended for the care devoted to it. The vineyard chosen by Mr. 
Howell for the experiment was one which had been well cultivated and 
cleared, but had never before received any treatment for vine dis¬ 
eases and for 3 years had regularly lost from 50 to 75 per cent of its 
crop by black rot. Besides this it had been invaded by downy mildew 
and anthracnose. 
The variety selected for experimental treatment was the Concord, 
because of its regular habits of growth and fruitage, and its unvarying 
susceptibility to rot. In accordance with instructions the vineyard was 
divided into 14 contiguous plats, 11 consisting of 58 and 3 of 50 vines 
each. In the 11 plats, containing 58 vines each, a sub-plat of 8 vines 
was marked off in the center of each. These sub-plats were left without 
treatment. The vineyard was then divided as follows : Three plats of 
50 vines each, containing no sub-plats; eleven main plats containing 
50 vines each having in the center a sub plat of 8 vines each. The 
different plats were designated by the letters of the alphabet from A to 
W, inclusive, as shown in the following diagram: 
A 
B 
A 
C 
D 
C 
E 
E 
E 
G 
H 
G 
I 
J 
I 
K 
L 
K 
M 
N 
M 
0 
P 
0 
Q 
R * 
Q 
s 
T 
s 
s 
T 
s 
u 
u 
V 
V 
W W 
Fig. 1, 
