152 
s € ravages of the Cemiostoma over = greater part of this immense 
area dat only w within the last 25 years. .In Dominica, Dr. Imray 
infor ipid me that he was not aie Opes that by care and attention 
the pes es caused by it might be gradually overcome, but the following 
extract from a more recent communieation will show how extremely 
difficult it is dto make any progress against it, and how important it will 
prove if the apparent immunity of the Liberian coffee from its attacks 
should continue to be o 
* Dr. Imray writes: * My Arabian x -~ SESE frightfully last 
season from the Cemiostoma, the sm rop that comin 
of the trees was all b digs om e eh to throw out 
RO: again, but I almost din air of finding any means of destroying 
the insect, where the circumstances and conditions are favourable for 
its propagation and existence e d er the con- 
altogether, in the Stats of trees, with no underwood or bush, 'as we 
say here. The coffee trees should scarcely see the sun. In a locality 
that is continuously cool and moist and perfectly shaded by the 
foliage of large trees they thrive best, and show very little appearance 
o blight 
the The inference is that those conditions are advers 
the existence of the insect. From such inquiries as I h made, the 
coffee uced in this countr n inconsiderable in 
brushwood, and leaving the large trees standing. From the experience 
of fully two n now I do not think that in this island [just now] 
the Coffea arabica can = — grown in the open, but we 
have the Liberian to fall back upon 
“With respect to the bunt of the po^wos coffee from the 
attacks of the Cemiostoma Dr. Imray writes: * That the Liberian coffee 
is impervious to the attacks of the * white fly, I meris a settled point. 
further experiments on arabica, as being simply a waste of time and 
money.' 
In the West Indies the Cemiostoma has been noticed to attack very 
severely Arabian coffee growing at low elevations, and especially trees 
in the open, without shade. On the other hand, coffee grown at eleva- 
tions above 3,000 feet is apparently aic. This observation, which, 
perhaps, more particularly applies to Jamaica, is of considerable value 
in estimating the distribution ci the injury done to coffee pic by this 
insect. The natural home of the Arabian coffee in warm reg 
mountain slopes. It is, senators; out of its element in costes ye 
at sea-level, and its enfeebled condition, pnus about by unfavourable 
surroundings, renders it less able to resist the stinka of such 
a plentiful and persistent enemy as the / ERE The early planta- 
ti 
elevations, well within the range of t 
ed higher and higher into the victis the trees inereased i 
