177 
appointed by the pie Club in St. Vincent. A careful omen 
leads me to the opinion that these are unexeeptionable and a t 
admirable. ‘They will not merely effect all - is possible an the 
fungoid diseases, but must also tend to bring the moth-borer under 
control. It would be ex isi A desirable that similar steps should be 
adopted in Aa and Barbados 
add, as an illustration of what can be effected by vigorous and 
ener goa action, na the piri ME in the Canaries was menaced 
by extinetion by t moth-bo r. Morris, the assistant director, 
spent some time in the blends “last year, and informs me that by intelli- 
gent and energetic action the moth-borer has been completely brought 
under control in the space of three years. 
Wa L. A Me 
(Enclosure.) 
Hoor-bisEASE OF SUGAR-CANE, ST. VINCENT. 
The "me ud ves by the Sows called Colletotriehum falcatum, 
ent, The re conidia this fungus are very abundant in the 
decayed dome of the canes, d all such should be burnt to prevent 
further extension of the disease. 
The material forwarded furnishes a clue which may lead to important 
results in connection with the disease. In one of the “stools” sent the 
portion of cane used for its propagation is badly infested with Tricho- 
spheria sacchari, the fruit of the Melaneonium stage being abundantly 
developed. In this same specimen the hyphw of the Trichospheria can 
be apes en the old portion into the new canes growing from it. The 
new canes and their rootlets are attacked by the Colletotrichum, which, 
from m preces at hand, appears to be nothing more than a condition 
of the T'riehospheria, modified. b being more or less buried in the 
ground. The necessary cultures for the verification or otherwise of this 
point are now being proceeded wit 
G. M. 
19th May 1894. 
CCCLXXXVIL—THE CITRON IN COMMERCE. 
(Citrus Medica, Risso.) 
aa Citron is a member of the orange see nent d allied to the 
lem There are numerous varieties, th urious being the 
Brod citron of China and Japan having more or is separate carpels 
looking very unlike the pre f elliptical as fruit. Specimens of 
fingered citrons are in the useums. The citron was the only 
fruit belonging to the orange tribe known in ancient Rome. The chief 
use of the citron at the present day is for its rind or peel usually 
imported into this country in a salted state and afterwards candied for 
