CONTENtfS vii 



CHAPTER XI 



DISEASES 



The science of plant disease — Animal pests : Man, deer, monkeys, 

 squirrels, and rats — Methods of destroying rats — Insect pests — 

 Mosquito Blight — The Steirastoma beetle— Thrips — Aphis — Twig 

 girdlers — Mealy bugs — Ceratitis punctata — Scale — The Lao insect — 

 Deimatostagea contumax — Parasol ants — Termites — Insect destructive 

 in the Gold Coast — Insecticides — Boring insects — Sucking insects 

 — Kesin wash — Besin compound — Kerosene emulsion — Whale-oil soap 

 solution — Tobacco solution — Resin and whale-oil soap compound — 

 Leaf-eating insects — Paris Green — London Purple . pp. 76-92 



CHAPTER XII 

 VEGETABLE PARASITES AND EPIPHYTES 



Dodder — Loranthua leptoldbua — Cryptogams — Fungus diseases of 

 cocoa — Losses sustained through fungus diseases — Vegetative and 

 reproductive organs of fungus parasites — Canker disease, Nectria ap., 

 in Ceylon — Canker in the West Indies — Die-back and brown-pod 

 disease, Diplodia cacaoicola — Witch-broom disease, CoUetrotrichum 

 luxiferum — Laaiodiplodia — Black rot of fruits, PhytopMhora omni- 

 vora, De Bary — Root disease — Pink disease, Gorticium lilaco-fuacum 

 — Thread blights — Fungus diseases of minor importance — Fungicides 

 — Bordeaux mixture — Ammonia and copper carbonate mixture — 

 Potassium sulphide solution ...... pp. 93-113 



CHAPTER XIII 

 HAEVESTING AND TRANSPORTING 



Fruiting age — Character of ripe fruit — Collection — Reaping imple- 

 ments — Bean extraction — Necessity for expediting transport of 

 beans from plantation to fermenting-house — Decauville railways 



pp. 114-121 



CHAPTER XIV 

 COCOA FERMENTATION 



Effects of fermentation — Action of oxidising enzymes — Yeasts and 

 bacteria — Germination during fermentation — Fermentation a biological 

 process — Characters of beans with white, and purple, cotyle- 

 dons — Aeration necessary for fermentation — Fermenting-ohambers 



pp. 122-131 



