349° ° 
Some guide to the requirements of the coffee trees may be 
found in the following table, from “‘ Le Café: Dans L’Etat de 
= nies (Brésil),” by A. Laliére (Paris, 1909) p. 122 :— 
nnual requirements of 1,000 coffee plants at different 
ages, ee aca. potash and phosphoric acid—the most important 
constituents taken up by them from the soil, are— 
Age of Tree. Nitrogen. Potash. Phosphoric acid. 
lb. lb. Ib. 
First 4 years - - - 9-87 23-62 2-49 
From 5 to 8 years - - 35-7 76-92 19-57 
From 9 to 20 years - 28-87 45-83 15-76 
After 20 years (oid ees - 5:09 30°53 9-48 
~— further particulars will be found in the following 
w 
ay Detach: Its Distribution, Commerical Sources and Agricul- 
tural Value’, by Alfred Smetham, F.I.C., pp. 1-28, reprinted 
from the Journal of the Royal Lancashire Agric. Soc. for 1915 
(Geo. Toulmin & Sons, 127 Fishergate, Preston). 
“Le Café: Culture” &c., by Henri Lecomte, “Chimie du 
Café et du Cafier’’, pp. 207-224 (Georges. Carré et C. Naud 3, 
Rue Racine, Paris, 1899 
“ Coffea arabica ; in “The Commerical Products of India ”’, 
by Sir G. Watt, “ Manuring and Manures,” pp. 378-380 (Jchn 
Murray, Albemarle St. London, 1908) with references to 
other works on the subject. 
“* Kafiee- Dungungsversuche ~ in Guatemala, by Gustav Holm- 
rich, pp. 1-20—Reprint from “ Tropenpflanzer ”’, Vol. V, No. 12, 
1901. 
‘“‘Versuche uber die Verwendung von Kunstdunger in der 
Kultur des Kaffees,” by Gustav Helmrich, p. 1-36—Reprint 
from “ Tropenpflanzer,” Beihefte, No. 4, 1908. 
** Peat-Moss Litter Manure’: with an Analysis of Farm- 
yard Manure, Kew Bull. No. 8, 1911, pp. 349-351. 
“ Green Manures ” , Kew Bull. No. 1,,1914, pp. 21-24. 
Coffee; Its Cultivation and manuring in South India ”’, by 
B.D: Anstead, Dept. Agric. Mysore, Bull. (General Series) No. 6 
1905. 
“ Artificial Farm-yard Manure”, by H. B. Hutchinson and 
E. H. Richards, Rothamsted Experimental Station, in Journ, 
Ministry of Agric. xxviii, August 1921, pp. 398-411 
- Latex Yield from Individual Rubber Trees.—In the Tropica, 
Agriculturist, vol. lvii., No 2, pp. 81-83 we notice three short 
accounts of the yeild ‘of latex from individual trees of Hevea 
brasiliensis and also results of tapping experiments. In a field 
of 613 acres where thinning had taken place until 80 trees per 
