Virginian tobacco, statistics of, 598, 600
    method of culture, 604

  Virola sebifera, 401, 512

  Voandzou, 371

  Voelcker (Dr.), analysis of quinoa, 310

  Volatile or essential oils, 565

  Vuelta abajo, the best class of Cuba tobacco, 613
    arribo, the inferior kind of ditto, 613

  Vulpinic acid, 488

  Wabessepin, a wild American potato, 372

  Wages paid in the Mauritius, 150

  Walnut, oil from, 510

  Wangle, oil seed, 533

  Watappinee, an Indian edible root, 372

  Water, proportion of in different kinds of wheat, 221
    quantity in potatoes, 227
    for making starch, 341

  Wax berries, 546
    palm, 541

  Weinmaunia, bark of, 499
    racemosa, 505

  Weight per bushel of crops in New Brunswick, 253
    of coffee per bushel, 47

  Wellstead (Lt.) on Socotro aloes, 629

  Westring (Dr.) on the Swedish lichens, 489-90

  West India ginger, 418

  Wheat, weight of, as an index of value, 236
    imported, 218
    flour do., 218
    culture, statistics of, 220
    annual produce of, 219
    analysis of, by Boussingault, 244
    average price of, 249
    best soil for, 247
    consumption of in England, 248
    produce of in England and Wales, 248
    information respecting, 10
    starch of, 331-35-36-37, 343
    composition of the ash of, 241
    yield per acre, 240
    flour, various analyses of, 237

  White pepper, statistics of, 428

  Whisky, quantity of maize used for, 271

  Wilcockes on Paraguay tea trade, 135

  Williams’s Middle Kingdom, extract from, 105

  Willoughbeia edulis, 378

  Wilson (Mr. T.) on the cost of producing sugar, 189

  Wilson’s rice-cleaning machine, 290

  Winnowing coffee, 51
    machine for tea, 116

  Woad, 452

  Wood dyes, 449
    oil, 511
    (Mr.) on indigo culture, Wool manufacture, oil consumed in, 510

  Wray’s practical sugar planter, 140

  Wrightia tinctoria, 463

  Xanthoxylum piperitum, 421
    ochroxylon, 460

  Xiguilite, the indigo shrub, 460

  Xylocarpus granatum, 519

  Xylopia aromatica, 421

  Yam, back, 333, 335, 337-38-39, 362

  Yams, varieties of cultivated, 362

  Yampah root, 376

  Yellow berries, 443

  Yerba, Spanish and native name for the Paraguay tea tree, 133

  Yucca amarga, 331

  Yucca, the Peruvian name for cassava, 367, 375

  Zamia, arrowroot obtained from, 319, 352
    pumila, 330