WOBK 



347 



XYLITE 



Work. Unit of W. : in Britain the power to 

 raise 1 Ib. through 1 foot of distance : the 

 power to raise 33000 Ibs. weight through a 

 distance of 1 foot in 1 minute is generally 

 reckoned as the unit of horse-power. 



Worm. (werm). [Wj/rm, the A.-S. word.] r. 

 Worms. 'Bladder JT.=Hydatid, q.v. Fluke 

 W., v. Fluke. Glow >F.=Lampyris noctiluca. 

 Guinea W., v. Guinea worm. Lob W.= 

 Earth W.= Annelida terricola. Slow W.= 

 Blind W., q.v. Thread W. =Oxyuris, q.v. W. 

 t?-ocfcs=.Helminthites, v. Lithichnozoa. W. 

 wheel : one having teeth on the edge adapted 

 to fit the teeth on a screw or worm. 



Worms, (wermz)= Annelidans: animals repre- 

 senting the lowest form of Articulata; having 

 elongated bodies, formed of numerous rings, 

 a soft integument, and feeble limbs. Used 

 Vy Linnaeus to include all known Inverte- 

 brata except insects. Earth JF.=Lumbrici. 

 Hair W. = Gordiaceae. Mud W r .=Limicolae. 

 Ribbon TF.=Nemertida, q.v. Sea W.: be- 

 longing to Errantia, q.v. Water W.=Nai- 

 didae, q.v. 



Wormwood= Artemisia, q.v. 



Wort, (wert). [Ger. irurz, plant.] Gipsy W. 

 =Lycopus. Glass IK.=Salicornia. Horn. 

 W. -=Ceratophyllum. Lead JF.=Plumbago. 

 Liver TF.=Marchantia. Madder JF.=As- 

 perugo. Moon W.=Botrychium. Mother 

 JF.=Leonurus. Mud TF.=Limosella. Pepper 

 W. = Lepidium. Spear W. = Ranunculus 

 lingua. Wound TT.=Stachys. 



Worts, (werts). [Wort, q.v.] Apple W.= 

 Tomaceae." Birch Tf^Betulaceae. Gutter 

 W. = Lentibulariaceie. Crown F".=Male 



fiherbiacepe. Ginger W. =Zingiberaceae. Horn 



TF.^Ceratophyllacese. Knot W. = Illece- 



braceae. Lead JF.=Plumbaginacea3. Lily 



tt'.=Liliaceae. Liver TF.=Hepatiese. Madder 



r.=Galiaceae. 

 Wrack, (rak). Grass IP. =Zostera, q.v. Sea 



Ws. =Zosteracere, q.v. 

 Wrasse, (ras). [Wrach, the Welsh name.]= 



Rock-fish =Labrus, q.v. 

 Wrasses, (ras'ez). [Wrasse, q.v.] = Cyclola- 



brida8=Labridae, q.v. 

 Wren. (ren). [Wrenna, the A.-S. name.]= 



Troglodytes vulgur : a 



building bird. Reed W. 



=Salicaria strepera. 

 Wrist, ( rist ). [ The 



A.-S. word.]=Carpus: 



the bones connecting 



the hand and arm . 

 Writing, (rit'ing). [A.-S. 



writan, to write.] Sculp- 

 ture JF.=Hieroglyphics. 

 Written. W. Jicfcen=Opegrapha scripts . 

 Wrought-iron=Soft iron : 



cast-iron rendered tough 



and malleable. 

 Wryneck=T 



=Cuckoo*8 mate. 

 Wyandotte cave. In 



Louis Limestone, Ci 



ford county, South-west., . 



Indiana. /j 



Wych elm = Witch elm, /" A 



q.v. 



Wurzel, (wer-zel). v. Man- 

 gel-wurzel Wryneck. 



Wren. 



X. 



Xanthates, (zan'thats). [Xanthic, q.v.] Com- 

 pounds of xanthic acid and bases. 



Xanthic acid, (zau'thik). [Gk. xanthos, 

 yellow.]=C 3 H 6 OSo: a viuic acid; also called 

 Ethyl sulpho-carbonic acid. 



Xanthin, (zan'thin). [Gk. xanthos, yellow.] 

 A yellow colouring matter obtained from 

 flowers. 



Xanthine, (zan'thin). [Gk. xanthos, yellow.] 

 =Xanthic oxide=CgH4N4O2: a white powder 

 found in the brain, liver, &c., and in urinary 

 calculi. Hypo X. =Xanthine with one atom 

 less of O. 



Xanthium,(zan'thi-um). [Gk. xanthos, yellow.] 

 An herb belonging to Asteracese. 



Xanthophyll, ( zan'tho-fil ). [Gk. xanthos, 

 yellow ; phyllon, leaf.] A bright yellow 

 colouring matter found in leaves. 



Xanthornis, (zan-thor'nis). [Gk. xanthos, 

 yellow ; ornis, bird.] A bird belonging to 

 Sturnidse. 



Xanthorrhosa, (zan-tho-re'a). [Gk. xanthos, 

 yellow. ]=Grass tree: a plant belonging to 

 Liliaceae. X. o?-&orea=Botany Bay gum tree. 



Xanthoxylacese, (zan-thoks-i-la'se-e). [Xan- 

 thoxylum, the typical genus.] =Xanthoxyds: 

 trees and shrubs, chiefly tropical, belonging 

 to Rutales. 



Xebec, (ze'bek). [Xebeque, the Spanish name.] 

 A small three-masted 

 vessel. 



Xenogenesis, (zen-o-gen'- 

 e-sis). [Gk. xenos, stran- =r 

 ger ; Genesis, q.v. ]= y~~ 

 Heterogenesis, q.v. Ex- 1 

 amples of X. ; galls, J 

 tumours, corns, &c. 



Xiphias, (zif'i-as). [Gk.y/ 

 xiphos, sword.] Sword- 

 fish: a fish belonging to 1 

 Scorn bridge, named from ~" 

 its long sword -like Xe)>cc. 



beak. 



Xiphodon, (zifo-don). [Gk. xiphos, sword; 

 odous, tooth.] =Anoplotherium gracile : fos- 

 sil remains of which are found in Upper 

 Eocene of France. 



Xiphosura, (zif-6-su'ra). [Gk. xiphos, sword; 

 ura, tail.] = King-crab, &c.=Merostomata, 

 q.v. 



Xylem, (znem). [Gk. xylon, wood.] A con- 

 stituent of fibro-vascular tissue, or wood, 

 which consists of xylem and phlcem ; xylem 

 being more abundant in the wood of Exogens 

 and phlcem in that of Lycopods, 



Xylite, (zi'lit). [Gk. xylon, wood.] A mineral, 



