173 
predaceous insects will be liable to be destroyed, which me shelter i in 
the ground and assist in reducing the numbers of the pes 
* The following may be noticed among the remedies that have been 
suggested :— 
* Guilding recommends* that ail the dry and useless leaves, under 
which, he says, the moth lays its eggs, should be stripped P he claims 
that this treatment has been found effective in removing 
“ Porter quotes,f the practice of “introducing a pinch at eget 
> for 
into the heart of the young cane’ the destruction of the pes 
n Meetic imper that in Veit in-1841, the ravages of the 
borer were to a great extent chec y allowing the refuse to ac- 
cumulate po the grounds, and buriak them ‘there, the old roots 
subsequently throwing up more vigorous shoots 
* Miss Ormerod, in writing of the pest in British Guiana — the 
year 1879, quotes the practice of cutting back thé cane below the 
surface of the ground, covering the rx with mould, and sing a 
handful of lime. The cutting out of the affected canes was tried on one 
estate over 246 acres, the result being poke Fraud satisf: actory In this 
case the canes cut out were put through the mill and suffice ini rum and 
megus obtained from them to pay expenses, Miss Ormerod also quotes 
the practice of steeping the cane for 48 hours in water before planting 
it, a treatment which was thought, on one plantation where it was tried, 
to destroy the hibernating larve without injury to the cane. It appears 
from the inquiries instituted in British Guiana, that it is a mistake to 
burn the refuse sugar-cane on the fields themselves, as this destroys the 
ants, which, when unmolested, aiid valuable assistance in keeping 
down the pest. The plan therefore approved was to burn, 
cane, after collecting it in heaps, outside the fields. ; 
* Dr. Riley ig ssa ge: burning all “tops” during the winter so 
as to destroy the larve which hibernate in them; selecting seed-cane 
from the least Milested oy of the plantation and laying it down in 
furrows during the winter, covered with earth as deeply as should be 
found possible without inducing decay, and only uncovering it as it is 
wanted in the spring for planting out, thus preventing the egress of 
moths from the larve which have hiber nated in the seed-cane 
Roth writes that] “ he has kept the pest Line control in » Queensland 
* by sending boys with sharp pocket knives along the rows of ca 
at grub. 
* migrated to a fresh shoot which as yet did not show any sign of 
* decay, and iios escaped.” Roth adds that " while dirty delis v were 
* being mein thes a by the grub clean fields were not infected 
* to any such exte 
A very striking instance in which the moth-borer (or a very closely 
allied species) was successfully dealt with eame under the notice of Kew 
from the island of Teneriffe. 
* Trans. à oan pns e ,p. 43 (1828). 
t * Natur of S (ae cane,’ d) G. R. Porter. London, 1830, 
1 Kavdese ers? > Chronicle E July 1856, p. 4 
& Proc. Ent. Soc. Lond. A det 16; and 163. pp. 33 and 36. 
l| In his Report on the in 
€ In his “ Animal Uatesites ot the Sugar-cane," p. 12, 1885. 
* 
