192 
No. 2. 
"The Marquess or DUFFERIN AND Ava to FonEIGN OFFICE. 
My Lorp, Rome, 15 June 1890. 
vias HAVE not failed to ae for the information Tespecting the use 
of sulphate of copper in Italy for the prevention and cure of-certain 
diseases connected with vines, as instructed in Soa Lordship's despatch 
of the 9th instant, and I shall not fail to forward such information as 
soon as it shall have reached me, 
In the meantime I have the honour to transmit to your Lordship 
y and translation of a publie notification issued. by the Viticultural 
Society of Italy, pointing ont the immense value of sulphate of copper 
combined with dodi sulphur, both in solution and in powder, for arresting 
various ting vines and recommending — its general use. 
* 
e, &c. 
M eigied).- ” DUFFERIN AND Ava. 
The bie of Salisbury, 1 K. AE, 
| &c. &e, 
[Enclosure i in No. 2.] 
NotIFICATION issued by the Vitiealtural Society of Italy respecting the 
of Sulphate of Copper i in. the Treatment of certain Diseases of 
ine. 
Fb cie ows: itself s ‘on’ the lower side of the vineleaf by 
whit ‘specks li Corresponding to these specks stains appear 
upper side of the leaf, whieh at first are yellow and afterwards, 
as ogra disease progresses, become dark and finally reddish brown. 
_ These stains have no prominences or protuberances. In the soin 
case n is a different dise 
phet: seie a. alio a ears on the young. bunches of. gropes, 
is is distinguishat to the naked eye by the formation of a minute sep 
efflorescence. 
The safest and most e efficacious re remedy to combat it is sulphate of 
copper or blue vitriol. -This — can be applied to the vines either in 
a liquid or a powdered form. 
he best remedy in the powdered form is pure sulphur with sulphate 
= copper: for example, 95 kilos, of pure sulphur to 5 kilos, of ins 
copper. 
The mixture of pure sulphur and sulphate. of. eo nsale. I 
pper is on sale, 
can also » made at home, either dry, by mixing — éilphur and 
sulphate of copper, or wet, A anc sulphate of copper in warm 
ing this tig and, after eap 
of the vine "uh so n bellows. It must be 
that the powders are kalaje less effectual than 
