854 



INDEX. 



Willow-strife, 487 



Wilson on fertilisation 

 of wheat, oats, and 

 barley, 634 



Wimble or peg graft- 

 ing, 325 



Winged fruits, 311 



Wings of corolla, 205 



Winter's-bark, 429 



Winter cherry, 549 



— — green, 527 



Winterese, 429 



Wistaria, 479 



Witch-hazel, 504 



Witsenia, 608 



Woad, 437 



Wollaston's doublet, 

 763 



Wood, durability of, 55 



formation of, 76 



Woodruff, 514 

 Woody layers, 53 



nodules, 116 



Woodsia, 639 

 Wood-sorrel, 464 

 Woolly, 33 

 Woorali poison, 338 

 Wormskioldia, 498 

 Wormseed, 521 

 Wormwood, 521 

 Wrightia, 537 

 Wukkum-wood, 482 

 Wych elm, 585 



Xahthic series of co- 

 lours, 393 



Xanthophyll, 391, 392 

 Xanthorrhoea, 615 

 Xanthoxylaceae, 468 

 Xerophilous plants, 663 

 Xylopia, 430 

 Xyridaceae, 618 



Yam, 611 

 Yew, 600 



age of, 361 



embryo sac of, 292 



fruit of, 317 



Yucca, 615 



Zait, 533 

 Zamia, 600 

 Zamites, 7^7 

 Zannichelha, 626 



Zanthoxylacese, 468 

 Zanzibar copal, 482 

 Zea, 630 

 Zebra-plant, 607 



wood, 476 



Zieria, 467 

 Zingiber, 605 

 Zingiberaceae, 605 



Region of, 683 



Zizania, 631, 634 

 Zizyphus, 473 

 Zones of wood, 53 

 Zoophilous, 284 

 Zoospores, 265 

 Zostera, 626 

 Zosterites, 753 

 Zygophyllaceae, 466 

 Zygospore, 268 



THE END. 



Printed by "S.. & R. Ci.krKj Edinburgh. 



