9 
to many of the Curculionidae of falling to the ground when 
jarred or disturbed. This should make it possible to catch them 
by jarring on to sheets as is done with the peach curculio, The 
larvae could doubtless be killed in the ground by injections of 
carbon disulphide, but whether this could be done without injury 
to the tree and at an expense that would make it practicable, 
can only be determined by carefully conducted experiments in 
the field. Whether tobacco or other substances worked into the 
soil about the tree would prevent the depositing of eggs, is per- 
haps worthy of trial. The insect is thought to be a general feeder 
and is not confined to the orange, though it seems to be particu- 
larly partial to all citrous fruits. Some growers claim that they 
have suffered more when practising clean cuitivation than when 
weeds and bush are allowed to grow for part of the year, the 
roots of which may serve to divide the attention of the grubs. 
In this connection it may be noted that orange scale insects 
are not likely to prove seriously troublesome, for in the moister 
regions at least they are quickly destroyed by fungus parasites. 
The orange rust mite occurs on the island, but it only seems 
troublesome on certain wet heavy soils. 
Cocoa Stem Canker. — This trouble was only observed in the 
neighborhood of Port Maria, but it probably occurs in other 
parts of the island. Slightly swollen areas occur on the trunk 
or larger branches. The tissues in the central part of the swell- 
ings soon die and the yellow perithecia of some Nectriaceous 
fungus develop on the bark. The swelling continues to grow at 
the margin till finally it often girdles and kills the tree. Keeping 
the trunks and larger branches painted or sprayed with Bordeaux 
mixture should be a complete protection from this disease. It 
would also destroy moss and lichens and keep the trunks in a 
clean healthy condition. Promptly cutting out the diseased areas 
and painting the cut surfaces with sulphate of copper or sulphate 
of iron solution and then coating with tar or paint would prob- 
ably in most cases save trees that are already attacked. 
Cocoa Pod Rot.—Examples of rotting cocoa pods were seen at 
various places. Apparently more than one species of fungus is 
concerned in this rotting. This point will be reported on later. 
