
ATE Oh TDR hot RUG U On Ae the Thetis tk) ta he 
Maman Oh Mia MaEN NS Oe 
eae UCN SAN a ae BA % y 

402 ‘Report oF THE CHEMIST OF THE 
which the condemned grapes came. These samples were given to 
the chemist of this station for analysis. ie 
In some instances, the copper compounds could be seen upon 
the berries, but it could be seen to be more plentiful upon the 
stems. In three samples, the berries were separated from the 
stems and the amount of copper determined upon each. In one 
instance, the berries and stems were not separated. Mr. Jenter 
assisted in making the determinations. | 
The samples from Marlborough were taken from two different 
vineyards. The samples 3 and 3a were from the same vineyard ; 
in sample 3a, the copper was estimated upon the berries and stems 
together and not separately. In the table below, the copper is 
given as metallic copper, the number of grains found for one 
pound of berries and stems. 
| From ONE PouND OF BERRIES AND STEMS, 
LOCALITIES WHERE SAMPLES 
OF GRAPES WERE OBTAINED, | Grains. esti | Grains, esti- | mated as meta 
mated as metal-| mated as metal- | Mated as metal- 
lic copper, on | lic copper, on | lie copper, on 
erries. 








stems, ber ae 
(1.) Milton, INN Na Giedictet A ito ececssece } 
(CLHAMIE NEON Yc Meno c cl eal dade cy Bo 
(2.) Marlborough, N.Y..... shy Reaett a 8 : 
(2.) Meriorough, NOY iio o.).0 area wid oe ay £0 
(3.) Marlborough, N.Y..... BT Hal sie sinisuncelees 
(Sumariborough, NOY oy! hones eles ty Tz 
(Sa.) Marlborough, N. Y....) ........ Meat: i 
Average for all samples. ide phy ay 
The results embodied in the table above, we may summarize as 
follows : 
1. The amount of copper, estimated as metallic copper, found 
on the berries, was very constant in the different samples, averag- — 
ing one one-hundred-and-twentieth of a grain for each pound of 
fruit (berries and stems). . 
2. The amount of copper, estimated as metallic copper, found 
_ on the stems, varied from one-ninetieth to one-fourteenth of @ grain 
for each pound of fruit (berries and stems), and averaged one- 
thirtieth of a grain. 

