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ONE 



their division, separate like rays from a 

 centre, presenting a stellated arrange- 

 ment. In the greater number of in- 

 stances, the smaller arteries take a tor- 

 tuous course, and are sometimes coiled 

 into spirals. It is only by means of 

 microscopic aid that these minute struc- 

 tures can be rendered visible. 

 2. In botany, a small transparent tumour 

 or vesicle, discharging a fluid, either oily 

 or watery, and situated on various parts 

 of plants, as the stalk, calyx, leaves, &c. 

 These glands are composed of closely 

 compacted cells, which perform the func- 

 tions of secretion, or the conversion of 

 the nutritious juices into particular pro- 

 ducts required for various purposes in 

 the economy of the plant. The perfume 

 of the flowers and leaves of plants arises 

 from secretions from glands. 



GLANDI'FEROUS. (from glandifer, Lat.) 

 Bearing acorns, or fruit resembling 

 acorns. 



GLA'NDIFORM. Of the form or shape of a 

 gland. 



GLA'NDULAR. } (glanduleux, Fr. glandulo- 



GLA'NDULOUS. $ so, It.glandulosus, Lat.) 



1. Pertaining to glands ; containing 

 glands ; full of glands. 



2. In botany, applied to the margins of 

 leaves having glands. 



GLAU'BERITE. An hydrous sulphate of 

 soda and lime. A mineral of a white or 

 yellow colour ; crystallized in oblique 

 four-sided prisms ; consisting of 51 parts 

 sulphate of soda, and 49 parts sulphate 

 of lime. It is less hard than carbonate of 

 lime, but scratches sulphate of lime. It 

 is found in New Castile, in Spain, dis- 

 seminated in muriate of soda. 



GLAU'COUS. (glaucus, Lat azure, yXavKot;, 

 Gr.) 



1 . Of a sea-green colour ; grey or blue ; 

 azure. 



2. In botany, applied to the leaves or 

 stems of plants, when covered with a fine 

 mealiness of a sea-green colour. 



GLE'NOID. (from yXrfvri and eZ<5of, Gr.) 



A part having a shallow cavity. 

 GLI'MMER. (Germ.) The name given by 



Werner to mica. 

 GLO'BOSE. (globosus, Lat.) Round ; 



spherical. 

 GLOBO'SITY. (globesita, It.) Roundness ; 



sphericity ; sphericalness. 

 GLO'BOUS. Spherical; round. 

 GLO'BULAR. Round; spherical. 

 GLO'BULE. (globule, Fr. globetto, It.) A 



small particle of matter having a round 



or spherical form. 

 GLO'BULOUS. (globuleux, Fr. globuloso, 



It.) Round; spherical. 

 GLO'MERATE. \(glomeratu8, Lat.) Ga- 

 GLO'MERATED. $ thered into a mass of a 



globular form. 



GLO'MERIS. (from glomero, Lat. to gather 

 into a round heap. ) A myriapod, resem- 

 bling a wood-louse, which, like the arma- 

 dillo, when alarmed, rolls itself up into a 

 spherical ball. 



GLO'MEROUS. (glomerosus, Lat.) The 

 same as glomerate. 



GLO'TTIS. (from yXwrra, Gr.) The up- 

 per opening of the larynx, at the root of 

 the tongue. 



GLUCI'NA. (from yXvicic, Gr. sweet.) 

 An earth obtainable from the emerald, 

 beryl, and euclase, of all which it forms 

 a constituent part. Sir H. Davy disco- 

 vered that glucina consisted of three 

 parts glucinum and one part oxygen. 

 Glucina is soluble in the liquid fixed 

 alkalies, in which respect it agrees with 

 alumina. It is insoluble in ammonia, 

 but soluble in carbonate of ammonia. It 

 combines with all the acids, and forms 

 with them sweetish salts, from which 

 circumstance it obtained its name. It 

 was first discovered by Vauquelin in 

 1798. 



GLUCI'NUM. The metal which is the base 

 of the earth glucina ; it has not yet been 

 obtained in a separate state. 



GLUMA'CEOUS. Having glumes. 



GLUME, (gluma, Lat.) The husk of corn ; 

 the chaff; the outer husk of corn and 

 grasses ; the calyx of corn and grasses. 

 In the grasses, and plants resembling 

 them, the floral envelopes are not called 

 calyx and corolla, but bracteae. The two 

 outer bractese are termed glumes. 



GLU'TINOUS. (glutineux, Fr. glutinoso, 

 It. glutinosus, Lat.) Viscid ; tenacious ; 

 gluey. 



GLU'TINOUSNESS. Viscosity ; tenacity ; 

 viscidity. 



GLYCE'MERIS. > A transverse shell, gaping 



GLYCI'MERIS. $ at both extremities ; hinge 

 callous, without tooth. 



GNARLED. Having hard knots. 



GNEISS. The name given by the German 

 mineralogists to a schistose or slaty gra- 

 nite, abounding in mica. It is a member 

 of the metamorphic rocks. By some 

 geologists, gneiss has been called se- 

 condary granite. Granite frequently may 

 be observed passing by scarcely per- 

 ceptible gradations into gneiss : when 

 granite contains but little felspar, and 

 the proportion of mica is increased, the 

 mica being arranged in layers, it becomes 

 schistose, and we find a true gneiss. 

 Again, when the mica becomes very 

 abundant, gneiss passes into mica-slate. 

 Gneiss occurs in Ireland and Scotland ; 

 but it is rarely found in England or 

 Wales. It is most abundant in Sweden. 

 Gneiss is composed of the same ingre- 

 dients with granite, namely, felspar, 

 quartz, and mica, its texture being equally 



