CONTENTS. yt 



Article 1. On the Cultivation of Woad . . . 295 



2. Preparation of Woad Cakes . . . 297 



3. The Extraction of Indigo from Woad . 302 



CHAPTER XXI. 



On the Cultivation op the Beet Root, and the Ex- 

 traction OF Sugar from it 315 



SECTION I. On the Cultivation of the Beet Root . . 315 



Article 1. On the Choice of Seed .... 316 



2. On the Choice of Soil . . . .317 



3. On the Preparation of the Soil . . ; 318 



4. On the Manner of Sowing Beet Seed . 319 



5. On the Care required by Beets during 



their Vegetation 320 



6. On the Gathering of Beet Roots . . 321 



7. On the best Method of Keeping Beet Roots 322 



SECTION II. On the Extraction of Sugar from Beets 324 



Article 1. On the Preparation of the Roots . . 324 



2. On the Method of Rasping the Beet Roots 325 



3. On the Extraction of the Juice . . . 325 



4. On the Purification of the Juice . . 327 



5. On the Concentration or Evaporation of the 



Purified Juice 330 



6. On Boiling the Sirup . . . .331 



7. On Boiling the Molasses and Leaching 



Sirups 336 



SECTION III. On the Refining of Sugar obtained firom 



Beet Roots . 337 



Article 1. On Clarification 338 



2. On Whitening Sugar .... 339 



SECTION rV. On the Distillation of Molasses . . 345 



SECTION V. On the Products of a Sugar Manufactory 348 



A* 



