ILLUSTRATIONS. 



A Prolific Cacao Tree in Par, Brazil ... Frontispiece 



Dr. Axel Preyer ... ... ... ... ... ... 3 



Cacao Shading Coffee, Guadeloupe 4 



Cacao Tree in Bearing, Trinidad 8 



Pulp of Fresh Forastero Cacao Beans from Ceylon ... 18 

 The Shell of a Ripe Cacao Bean, Forastero Variety, from 



Ceylon 19 



Cacao Yeast (Saccharomyces theobromce) 22 



Section of Tank for Cacao Sweating 30 



Dr. Oscar Loew ... ... ... ... ... ... 33 



Cacao in the Fermenting or Sweating Boxes (San Thome) 36 



Structure of Cacao Fruit 38 



Structure of Coffee Fruit 59 



Dr. Fickendey ... ... ... ... ... ... ... 69 



Dr. Schulte im Hofe ... ... ... ... ... ... 79 



Drying Cacao in Trays on Wheels at Agua Ize (San 



Thome) : 86 



The Buildings on a Large Cacao Estate, Boa Entrada, San 



Thome ... ... ... ... ... ... ... 94 



Cars of Cacao, covered with Banana Leaves, arriving at 



the Fermenting or Sweating House (San Thome) 96 

 Drying Cacao on Trays on Boa Entrada Estate, San 



Thome 108 



Cemented Boucans or Drying Areas in San Thome, with 



Cacao Beans spread out to dry no 



Dr. J. Sack ... 135 



Mr. George S. Hudson 155 



Plan of Mr. Hudson's Ideal Cacao-curing House 174 



The Palette ... *" 192 



Plan of the " Whitfield Smith" Hot-air Dryer 196 



Mr. Hudson's Modification of the " Whitfield Smith " 



Hot-air Dryer ij97 



Dr. Lucius Nicholls 2^23 



Smear from Cacao showing Involuting Yeasts 224 



The Cacao-fly (Drosophila melanogaster\ its Eggs and 



Larva 227 



Cacao Seed showing the Convolutions of its Cotyledons 233 

 Sloped Agar Tube showing Yeast Growing on the Sloped 



Surface ... ... ... ... ... ... ... 240 



Yeast Smears 242 



Three forms of Acetic Acid forming Bacteria ... ... 243 



The Cacao-fly (Drosophila melanogaster} "... 272 



Open Mandalas (Fermenting Heaps) of Tobacco ... 288 



Closed Mandalas with Tobacco 289 



