68 ‘*THE COFFEE PLANTER OF CEYLON.” 
In looking over the valuable matter in the Append- 
ix, we are struck with some curious results arrived 
at by further experience. Mr. Wall wrote on manur- 
ing some fourteen years ago. Time has confirmed (as 
we shewed in our last issue) his estimate of the value 
of mana grass; but it has completely overset what he 
wrote about coffee pulp. All he could say of pulp 
was that it was not ‘‘very valuable or very effective, _ 
but it costs nothing or next to nothing.” In the 
experience of others it has proved of immense value, 
even alone ; but certainly most beneficial when mixed 
either with cattle dung, bones, or superphosphates. 
Mr. L. St. G. Carey considers pwip and superphos- 
phate about the best possible application to coffee ; 
while in Mr. Sabonadiére’s estimation, pulp mixed 
with cattle dung, is equal in value to the cattle dung 
itself. But can extended use alone, in the face of 
such large exports, have led to the great rise in the 
cost of bones? Mr. Wall stated the cost of bones 
in 1857 at 3s. 6d. per cwt. (£3 15s. per ton!) im 
Colombo or 6s. on the estate. Taking 5 cwts. as the 
quantity for an acre, about 45s. per acre would suf- 
fice for cost on estate and applying. Mr. Sabonadiere 
is moderate when he calculates the cost of a ton of 
steamed bone dust at Colombo now at £8 10s. or £10 
on the estate. He would apply half a ton ata cost 
of 17s. 6d. or £6 2s. 6d. per acre in all. The half 
of this would be 61/3 against Mr. Wall’s 40/; 
the cost of bones in Colombo having thus more than 
doubled ; the cost of carriage to the estate being 
reduced from £2 10s. to £2 per ton; while the cost 
of applying has risen from 14s. 8d., say 15s., to 17s. 
6d. Allowing for the additional cost of grinding and 
steaming, the great fact is that bones in Colombo 
cost now considerably more than double what they 
could bs procured for in 1857. Even so, if of good 
quality, they are well worth the money, and recent 
experience points not to their disuse, but to their 
judicious use. 
Third Notice. 
KNEMIES OF THE COFFEE TREE. 
The note of alarm sounded by a correspondent to- 
day gives a new interest to anything referring to the 
ravages of ‘‘erub” on coffee estates and the remedies 
proposed. In Dimbula, where large expanses of pata- 
nas alternate with forest, we can scarcely be surprised 
that black and white grub (the larve of moths and 
cockchafers) should abound and should be destructive 
to young coffee as well as to cultivated plants of every 
kind. We have already stated in these columns that 
on many young estates in Dimbula fifty per cent of 
