. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. A FORTNIGHTLY REVIEW OF THE USi IMPERIAL DEPARTMENT OF AGRICULTURE FOR THE WEST INDIES ZZ Vol. XIII. Xo. 31-5. BARBADOS, MAY 23. 1914. Price Id, CONTENTS Page. Agricultural Education ... 165 Atemoya. A New Fruit for the Tropics 164 Balata in British Guiana 171 Biitish Guiana and Peasant Agriculture 169 Cacao, Practice of Fermen- tation 175 Canadian Tariff Changes, New 169 Chickens and Bees ... 167 Clo\e Industry in Zanzibar 164 Coagulation and .Strength 171 Corii-Drj'ing Factory in An- tigua, Opening of 162 Cotton
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. A FORTNIGHTLY REVIEW OF THE USi IMPERIAL DEPARTMENT OF AGRICULTURE FOR THE WEST INDIES ZZ Vol. XIII. Xo. 31-5. BARBADOS, MAY 23. 1914. Price Id, CONTENTS Page. Agricultural Education ... 165 Atemoya. A New Fruit for the Tropics 164 Balata in British Guiana 171 Biitish Guiana and Peasant Agriculture 169 Cacao, Practice of Fermen- tation 175 Canadian Tariff Changes, New 169 Chickens and Bees ... 167 Clo\e Industry in Zanzibar 164 Coagulation and .Strength 171 Corii-Drj'ing Factory in An- tigua, Opening of 162 Cotton Notes:— Cotton-Growing in Queens- land 166 Studies in Indian Cotton 166 West Indian Cotton ... 166 Dominica, 1913 Exports from, ... 168 Page. Fibre-Cleaning Machine, New 17:> Fungus Notes:— Two Tomato 174 Gleanings 172 Hides and Skins for Export, Preservation of 167 Holding Black Cotton ... 175 Insect Notes:— Insect Pests and Fungoid Diseases in Barbados, 170 169 1912-13 Is the Earth Drying up Labour i>aving Devices, Recent Progress in ... 173 Market Reports 176 Mauritius and Agricultural 163 Notes and Comments ... 168 New Map of the West Indies, A 169 Rice, Production of 168 Sea Island Cotton, Manur- ing nf 161 The Manuring of Sea Island Cotton. ^X the search for plant nutrients which began early in the seventeenth century, it was (held by some that oil was the principle of plant growth because it could be shown to contain a large amount of carbon. This was long before Liebig's famous report to the British Association appeared—a report which established once and for all that the plant's main, if not sole, source of carbon is the carbonic acid gas of the atmosphere. The effect of this discovery of the source of carbon has been very great as regards the question of manuring. We now know that practically all plant products which, like oils, starches, fibres and sugars are composed of carbon, hydrogen and oxygen, are valueless as direct sour
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