16 
The blight occurs in patches amongst the young canes and after- 
wards spreads, over considerable areas, as the canes grow. Each centre 
of infection may spread to as much as 400 square feet, by the time the 
canes are fit to crush. The size of the patches evidently depends on 
the period of infection. The blight may be carried about and 
distributed by the coolies passing along the rows of cane, or along the 
footpaths round their ir edges, as the insects fall off when the cane is 
shaken or a person brushes against it. This view is supported by the 
faet that the edges of the fields are more affected than the interiors. 
The blight attacks iue leaves, and, as they die off, ascends to the 
younger ones. Ultimately the cane also either dies or stops growing, 
and in the latter pri is “gf little or no use in the mill, as it contains 
hardly any sugar. 
I would suggest that the best way of arresting the progress of the 
blight is to spray the affected plants with kerosene oil emulsion. The 
emulsion I would recommend is made as follows : 
Calvert's carbolic soft soap  ... А ak Be 
Hot water ж E S .. 2 gallons 
Kerosene oil  ... T xd See, uice 
The water should be boiled and the soap dissolved in it. Then 
while still hot the oil is added and the whole violently agitated until 
it assumes the appearance and consistency of cream and ra is no 
free oil floating on the ba after standing for a short ti 
The best way to churn it up, is ы use a syringe. cs it ve 
and then squirting it out again into the containing vessel. 
action if eontinued for about ten iine usually suffice. This 
ied. This is made in the same way as above described, but in place 
of the soft soap, a tin of condensed mill à is substituted 
The fluid is to be sprayed on E the blighted cane with some sort 
of syringe. The best kind is one fitted with a cyclone — as it 
gives the finest spray and tharefore wets a greater surface in pro- 
portion to the amount of = eimi used. 
t was first suggested by me to kill the cater jillars 
which at that time were destroying all the cabbages in the esed 
