GIRASOL 



145 



GLEICHENIACEJE 



Girasol, (zhi'ra-sol). [The Italian name.]= 

 Sun-opal: a transparent red variety of opal; 

 also called, fire-opal. 



Girder, (ger'der). [A.-S. gerd, rod.] A large 

 beam, crossing a wide opening, such as a 

 road. Box G. : a square tube. Lattice G. : 

 with iron lattice-work. Plate G.: having a 

 plate at top or bottom, or both. 



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Lattice Girder. 



Box Girder. Plate Girder. 



Gismondite, (gis'mon-dit). A rare mineral, 

 chiefly hydrated silicate of aluminum, cal- 

 cium, <fec. 



Gizzard, (giz'zard). [Gesier, the French word.] 

 In birds: a modification of the stomach, 

 serving to grind grain, and corresponding to 

 the pylorus. * . 



Glacial, (gla'si-al). [Glacia Us, the Latin word.] 

 Icy : connected with glaciers. G.drift=BonldeT 

 foruiation=Diluvium. G. period: common 

 to and connecting Tertiary and Post-Tei-ti- 

 ary; probably divisible into two periods, 

 separated by a long period of submergence, 

 and partly anterior to drift period. G. 

 action: existence of, proved by erratic blocks, 

 Arctic character of shells, and similarity of 

 fauna and flora on far apart mountains. G. 

 acids; which occur in a crystalline form. 



Glacier, (gla'si-er). [The French word.]= 

 Snow converted into ice, usually porous and 

 opaque: an ico river; abundant in Switzer- 

 land, Norway, and near Cape Horn. The 

 motion of a glacier is continuous, but varies 

 with the temperature. 



Gladiolus, (gla-di'o-lus). [L. gladiolus, little 

 sword ] Corn flag : a plant belonging to 

 Iridaceae, named from its sword-shaped 

 leaves. 



Gladius, (gla'di-us). [L. gladius, sword.] 

 The internal shell of cuttle fishes; also called 

 Pen. 



Glairin, (glair'in). [Glaire, the French word.] 

 s=Glaire= White of egg. r. Albumin. 



Glaisher's factors. [Prof. Glaisher.] A table 

 of constants used in finding the dew point. 



Glance, (glans). [GUtnz, the German word.] 

 A general term for lustrous minerals. G. 

 copper = Chalcocite. G. coal = Anthracite. 

 Lead .=Galena. 



Glands, (glandz). [L. glans, acorn.] Secret- 

 ing viscera : those which absorb from the 

 blood certain substances. Monotrematic G. 

 = Abdominal G. of Ornithorhynclms: have 

 no nipples; not conglomerate. Mammo,ry 

 G.: simple caeca in Cetacese and Monotremata; 

 conglomerate in higher Mammalia. G. of 

 Lieberkuhn : in the walla of the intestines. 



Glareola, (gla-re-o'la)= Pratincole: a wading 

 bird, known in the Old World only, belongs 

 to Grallatores. 



Glass, (glas). [Glas, the A.-S. word.] A 

 compound of various silicates, which is very 

 transparent, very brittle, and fusible at a 

 high temperature, and can be converted into 

 enamel or porcelain. Bohemian G.: silicate 

 of potassium and calcium. Bottle G. : a coarse 

 variety of glass. Crown <?.=Silicate of pot- 

 assium and calcium. Flint (?.=Silieate of 

 lead and potassium. Stained G.: coloured 

 in the making, chiefly by metallic oxides. 

 Plate G =Cast G.=Silioate of sodium, cal- 

 cium, iron, &c. Volcanic G. = Obsidian. 

 Water (?.=Soluble G.=Hydrated silicate of 

 potassium or sodium. G. iv?/=Campanularia 

 integra: a parasite upon parasitic Sertularia. 

 G. eel' belonging to Leptocephalidse. G. rope- 

 sponge = Hyalouema. G. serpent = Anguis 

 ventralis. G. s/ieiJ=Carinaria: belongs to 

 Gasteropoda. G. shrimp = Erichthus : a 

 marine ciustacean animal. G. icorfeSali- 

 cornia: an herb belonging to Chenopodiacese. 



Glasseri fissura=Glasserian fissure: a narrow 

 slit between two bony surfaces in the ear, 

 through which the tympanic artery passes. 



Glauberite, (glaw'ber-it). [Glauber's, q.v.] A 

 mineral, chiefly sulphate of lime and soda. 



Glauber's salt, (glaw'berz). [Herr Glauber.] 

 = Sulphate of soda: used medicinally; also 

 called Mirabilite. 



Glaucae, (glaw'se). A group of small willows, 

 with soft silky leaves. 



Glaucium, (glaw'si-um). [Gk. glaukos, blue.] 

 Horned poppy: a plant belonging to Papa- 

 veraceae. 



Glaucolite, (glaw'ko-Ht). [Gk. glav.kos, blue; 

 lithos, stone.] =Wernerite: a variety of albite; 

 a mineral, chiefly silicate of alumina and 

 lime. 



Glaucoma, (glaw'ko-ma). [Gk. glaukos, blue.] 

 A disease of the eye; in which the pupil is 

 changed in colour from black to green. 



Glauconite, (glaw'ko-nit). [Gk. glaukos, blue.] 

 A silicate of aluminum, iron, &c., found in 

 Greensand. 



Glaucophane, ( glaw'ko-fan ). [Gk. glaukos, 

 blue; phaino, I show.] A variety of garnet, 

 A mineral, chiefly silicate of aluminum, iron, 

 potassium, &c, 



Glaucopis, (glau-ko'pis). [Gk. glaukos, blue ; 

 ops, eye.] Wattle-bird: a sparrow-like bird. 



Glaucus, (glaw'kus). [Gk. glaukos, blue.] 1. 

 A molluscous animal, belonging to Gastero- 

 poda. 2. A small lizard-like animal, with 

 body and tail, four limbs, and many feelers, 

 but no mouth or eyes ; about 1 inch long. 



Glaux, (glawks). [Gk. glaukos, blue.] 1. Sea 

 milk-wort. 2. An owl. G. Javonica=Glasa 

 owl. 



Glazing, (gla'zing). [Glass, g.v.] 1. Fixing 

 plates of glass in window frames, &c. 2. To 

 cover with a vitreous coat. 



Gleditachia, (gled-it'si-a). [Herr Gleditsch, 

 a German botanist.] A plant, belonging to 

 Leguminaceae. G-triacanthos^'Koney locust. 

 G. m0nos/9erma= Water locust. 



Gleicheniacese, (gll-ken-i-a'se-e). v. Filicales : 

 K 



