FLORIDA STATE HORTICULTURAL SOCIETY. 9T 
called attention to the fact that the importation of a single 
inch of such a diseased cane could, under the proper circum¬ 
stances, hopelessly ruin the sugar industry of Florida. 
PEACH ROSETTE. 
In the same speech attention was called to the existence of 
peach rosette in Georgia, just across our border line. I will 
not go into the description of this disease; suffice it to say 
that it is only a question of four or five months’ time from the 
attack until the trees are only good for fire wood. But the 
worst of the whole matter is that a portion, ever so small when 
carried from a diseased to a healthy tree, can produce the 
disease in the healthy one. Thus the unsuspecting fruit 
grower may, on the blade of his pruning hook or grafting 
knife, carry the disease to any or all the trees in his orchard, 
from one diseased tree. This disease is not in Florida as far 
as I am able to learn. 
THE CALINORNIA VINE DISEASE. 
In Orange county, California, seven years ago there was 
10,000 acres of vines. The land sold for $300 to $500 per 
acre; last year the same land would not bring more than $T5 
to $200 per acre. The loss as a result of this vine disease is 
•estimated at not less than $3,000,000. this the lowest estimate. 
This single disease has rendered worthless for vine culture, 
20,000 acres or more. The cause, introduction and cure are 
all unknown. There is no doubt that our soil, climate and 
temperature will permit this disease to be propagated. 
POURRIDIE. 
(Dematophora necatrix.) 
Let me speak of another vine disease that we may expect 
almost any time; this is known in France as pourridie. It is 
caused by a fungus, dematophora necatrix. This has lately 
been introduced into Australia in a bundle of grape cuttings. 
It is not present in Florida, but the climatic conditions are 
perfect for its propagation. 
MANGO BLIGHT. 
Mr. President—I have one more case to offer. There has 
been lately, i. e., within the last three or four years, intro¬ 
duced a blight of the mango blossoms. As far as my obser¬ 
vations goes, it exists only in a limited area, and could be 
easily subjugated or entirely destroyed. 
We are in imminent danger of all the diseases discussed in 
this paper. But these are not all that threaten our prosperity 
