COFFEE PLANTERS’ MANUAL. 39 
and not exceeding six inches in depth, and the manure 
should be well mixed with the soil previous to being co- 
vered, Thatthe best time of application of cattle manure 
and pulp, which are longer in taking effect than some of 
the artifici:l manures, should be as soon after crop as 
possible, whereas artificial manures can be kept for a later 
period of the year, till the rainy season commences. To 
those gentlemen who have taken the trouble to furnish 
detailed statements of the cost «f the different kinds of 
manure and their application, the Sub-Committee have 
to return thanks, and espec'ally to Mr. Corbet for a 
valuable set of tables shewing the cost of mannres. Yet, 
with a great deal of valuable in’ormation b fore them, it 
seems to the Sub-Committee very clear, that the Reports 
sent in for the most part shew a great paucity of results. 
Very few planters appear ever to have accurately tested 
these. ‘This could only be done by setting aside certain 
rows of coffee of an average field for each kind of man- 
ure-—if running up from the bottom to top of a hill so 
much the better, as the effects would be the mor. obsery- 
able. On either side of these manured rows should be 
left as many unmanured, so that the contrast would be 
visible. J'hese manured rows ought to be picked separ- 
ately from the rest of the estate. A distinct account: 
should be kept of the produce of each set, and samples 
of the coffee put aside, so as to enable the manager to 
judge as well of the quality as of the quantity. 
“Tn order to carry out the above suggestions, and to 
turn them to practical account, your Sub-Commi‘tee are 
of opinion that planters should be invi ed to co operate 
with the Committee, and that one or two gentlemen im 
each district should be appointed to collect reliable in- 
formation, based on fature experiments, and submit the 
results quarterly to the General Committee till the full 
effects of manures are fully tested.” 
In this connection I shall mention Jiater Ho’es. 
These were first introduced as holes int-nded to }e 
filled with manure. The article however runnin 
short the holes remained open, and it was fount 
after some time that the tree took a fresh start of 
growth, partly perhaps caused by the temporary 
exposure of the roots to the sun and air, «nd partly 
by the loose earth that gradually dribbled into the 
hole again, together with whatever accumulations of 
leaves, timber and other decayed vegetable matter 
lay about on the surface of the ground ne:r. Jihs 
since become a system to make water holes between 
every four trees, or between every 8 or 12 trees. 
These are generaily made about 2 feet squire by j 
foot deep. or 20 inches square, or 18, according to 
taste and space. If the object be to collect wat r 
and save wash, the more holes the better, while if 
it be in a dry district, and intended to cateh the 
accumulated surface débris, by slipping four trees on 
each side, or say by opening a hole between four 
