ght extent, while poor nutrition, the ravages of
insects, etc., have in other cases their effects as well as leaf disease."
Or, in other words, he states that, as was suggested to me by Mr.
Reilly--a planter of long experience near Coonoor on the Nilgiris--that
much loss of leaves, which has been attributed to leaf disease, is often
due to other causes.

Mr. Brooke Mockett--one of the planters previously alluded to--informs me
that "Leaf disease is certainly worst (1) on trees that are cropping
heavily, (2) on trees that have been severely pruned (heavy pruning being
ruination in my opinion), (3) on plants under bad caste shade trees (these
plants it seems to cripple), and (4) on plants in the open."

It is worthy of note that the Coorg plant is not nearly so liable to
attacks of leaf disease as the original Mysore Chick plant. I have seen a
tall plant of the latter variety heavily attacked, while a Coorg plant
partly under it was only slightly attacked on the side next the Chick
plant, and hardly at all on the side not under the Chick plant. I observe,
too, from the Planting Correspondent's Notes in the "Madras Mail" of
January 30th, 1892, that the same thing has been observed in Coorg, and
that occasional Mysore plants, which had by some accident found their way
into the Coorg coffee, got the disease first, and that it then spread into
the surrounding coffee.

It should be borne in mind that leaf disease does not kill the tree, but
only injures it, and diminishes its powers by depriving it of much of its
foliage, so that there is nothing alarming in leaf disease when it is
controlled by good management of the tree, and good shade, cultivation of
the soil, and manuring; and the only case I can hear of where anything
like permanent injury has occurred, is where the disease has existed under
the shade of bad caste trees. But it is far otherwise with the justly
dreaded Borer insect, which, however, can, as we shall see, be effectively
controlled by good shade. To the attacks of this insect I now propose to
direct the attention of the reader.

The too well-known coffee Borer is a beetle, about as large as a horsefly,
which lays its eggs in any convenient crevice, and generally, it is
supposed, near the head of the tree, in the bark, or wood of the coffee
tree. After the larvae are hatched they at once burrow their way into the
tree, where they live on the dead matter of the inner or heart-wood of the
stem, and there the