OCTOBER 2, 1875.] 
THE GARDENERS 
CHRONICLE. 
425 
mity of the үтү" {тот whence it rapidly ex- 
sew н а о that within the s space 
ed from 
the br disease spots reappeared, and ad 
rapidly as to ki trees. In t ace of so 
destructive an enemy the planters seemed paralysed, 
o atte se s ever mad 
face of facts hav come to ligh 4 
Е Ње M^ me writer of an article on th 
he Dominica VENE for 
B ober Tat is prob HEN not far wrong when he says : 
e of a year 
est the 
and ma buy d the attacked rished, Neither did 
it spare the Bes greater укны? of the young 
plants in the nurseries were affected as soon asa fev 
leaves sei thrown out, and after twelve months, not 
any remained alive. 
'The whole pen = ME Coffee disease, as given 
in and or fou secutive numbers of t 
e Dominica 
Courant, is a ve e aaa Br prapa of facts, and 
the иы p: the insect a: 
accurate—the pest having within the past few weeks 
only heen а identifed with the Cemiostoma а үнү am 
of Man been arrived a 
—* We still impressed with the belief that had | scope, having been eu 
per xd d ied atte been y the r, Imray, an old resident of inica, and a fre- 
planters and others to overcome the formidable enemy | quent contributor to the Kew establishment. The 
against which t ad to contend, to continue | specimens were, however, selected and ted for 
cultivation of the Coffee plant, the tree migh r. Imray by Dr. Nicholls, a з Seep ES in th 
have held its ground until the influence of the disease island. They were wa тар. f the 
e 
See елдд os edes 
SS 
would n 
as the m artile of exon from se island ? 
the disease was of insect origin there se 
but Lo е told in the paper t before referred. Es that 
the records of Dominica do not appear to ‘contain 
Pu ny description of the nature of the Coffee “plight nor 
oes it appear that any D ve made to 
Et for its existence." sect ай opera- 
tions ar БЕ thus денеа їп бе: гияда на for 
Octobe 17 last 
А sk whitish coloured fly deposits its eggs on the 
mmere 
That 
o doubt, 
surface of the lea n time these eg tch, and a 
very small за б terpillar is produ ich per- 
fora surface of the leaf and buries itself in the so 
and forming the brown spots tha e 
ance e S the foliage. The caterpillar thus remains unseen 
e per 
| length. It then crawls der ce of 
the leaf, and like the silkworm weaves a small cocoon, 
1 In the chrysalis condition it remains for a time, and then 
. “Omes forth in its perfect st a Th ture 
. -8gain deposits = eg pt. ndles 
| Found goes yriads of these cater- 
Pillars have destroyed | ie rur of the leaves. Опе 
| 90р of foli е drops off, and another en , to be 
; attacked } by "the i insect in thes same manner, until, finally, 
the tree itself i eL abi dies” 
The di affects the ( Coffee tree alone, no plant, 
recent go 
HE Society, 
fe chla an тет identified them 
h the above indly pointed 
LU that a ARE пе a “Of th the insect, together | 
e$ 
CS чое ^ed 
Â< ——— 
> 
| 
| 
mine, 15 ‘millimetres long sni ia ten mioaa broad, 
RESI seven larvæ, th e n 
groups w four rice three nar many as p 
five mines, all in have n fou d d 
leaf, Md even m ae паде by teh farvi, t though 
арфе e of the larvz had esca 
the larv. it cuts an ап or rounded slit н 
Ње epidermis near an e edge of the mine. 
Cemiostoma coffeellum is the only apaa of me 
genus yet Ко outside the limits of Eur 
ob 
tree is evergreen 
hiberna ug: on is сыўа sho 
that the 
e eggs are said to b 
eight days after being laid. 
fifteee: 
gins to eat the а. 
АТА it may be found under an edge or 
in the 
vol. vi. . 332 and 596 (1872). 
From 2 aper, which is . B. Pickm 
Mann, we gather ie following deaf. Le. in opran is 
ia the white leaf. miner, and is 
escri 
eatest Pen to the Coffee culture in s Brazil 
T he as we have shown, burrows into the leaf, 
causing the brown spots. er the larva has 
: i to 
nz tt yma between the upper 
leaf by eating ou paren 
skin and A the framework of the leaf, лор Ta the — 
work bare but leaving the epidermis fat ct, e 
the pont wher the larva bra the lea 
the w up, же? а up 
the se larvz usually become united, and even 
the mines of two t may be united into one, One 
an end of the blotch, eating, When the larve is full 
grown it escapes from the mine and often, or perhaps 
enerally, goes to b cs 1 5 сосооп, 
which it does across one of the furrows at the edge of 
the leaf on the upper or the ia surface, but oftener 
on the under. The larva places itself a furrow 
and begins a web by касос а series from 
re part the 
it - made one sid 
spi a like series of thr 
he web, and jm a flooring of silk, On this 
ooring it spins its cocoon, laying the outside 
hreads lengthwise p ako 
he greatest abundance o 
