MANURING COFFEE. 195-. 
potassic chloride and ammonic sulphate, thus :— 
lb. per acre. 
Calcic superphosphate ... ... 528 
Potassic chloride at 80... ... 440 
Ammonic sulphate Beet diet tr 3 fe) 
Calcic sulphate By MU ees | A 
1,320 
Potassic chloride has the advantage of being cheaper 
than the nitrate. It is composed of potassium 52°41 per 
cent, and chlorine 47°59, the first-named constituent 
being equal to 63°16 of potash. The price of this sub- 
stance when M. Ville wrote was 7s 2d to 8s per cwt., 
against £1 4s for the nitrate. To Ceylon planters it will 
be important to learn that ‘‘Since the discovery of the 
Stassforth mines, the price of this salt cannot fluctuate 
much, as the supply exceeds the demand.” We believe 
there have been eome importations of this valuable 
source of potash into Ceylon, by an estate agency house, . 
but we have not heard the result of their experience. 
Ammonic sulphate is mixed with this substance, no 
doubt to supply nitrogen. Once again we have for vines 
and fruit trees a normal homologous manure where 
calcic superphosphate is replaced by precipitated calcic, 
thus :— 
lb. per acre. 
Precipitated calcic phosphate ... 220 
Potassic nitrate su .-. 440 
Calcic sulphate He ... 220 
880 
The merits of precipitated phosphates are its greater 
cheapness, its more certain action, superphosphate being 
rather too soluble for newly-opened lands. 
What puts fruit on vines, would, we should think, 
put fruit on coffee trees, and by his manure M. Ville 
obtained a heavy crop, which vines left unmanured 
yielded absolutely nothing. This case is strikingly illus- - 
trated by engravings of the contrasted plants. Butas 
our new soils at least are fairly supplied with nitrogen 
and potash, perhaps we had better look at the com- 
position of the manures which M. Ville recommends 
for plants in which the dominant ingredient is supplied 
by calcic phosphate, such as maize, sugar cane, sorgho, 
and Jerusalem artichoke. The normal manure in this 
case is ec  mposed of. 
Ib. per acre. 
Calcic superphosphate ... ... 528 
Potassic nitrate oA ... 440 
Calcic sulphate i ... 302 
1,056 
