GEBER'S GLOMERULES 511 



thalin, I part ; benzene, 10 parts; acetone, IO parts; 



coal-tar, loo parts; aqua ammonix (20 per cenl 

 1000 parts ; it is recommended as affording a vapor 

 for inhalation in whoopi h. 



Geber's Glomerules. The convolutions of the terminal 

 branches of the nerves supplying the epithelial lining 

 of the mouth. 



Geddes' Fluid Extract. See Abies. 



Geissler's Apparatus. An apparatus for estimating the 

 quantity of carbonic acid in a carbonate. 



Geissospermin, or Geissin [gi-so-spe7- / -tnin, or 

 sin) [yeiaaov, cornice; airip/ia, seed], (.',,,1 l. J4 X,< )., -+- 

 I !.,(). An alkaloid from the bark of Geissospermum 

 lave; it is a depressant of the respiration and of tin- 

 cardiac action. 



Geissospermum ^gi-so-sper'-mum) [}nc;oov, cornice ; 

 OTvipua, seed]. A genus of apocynaceous trees. G. 

 laeve and G. vellosii, of Brazil, afford Pao-pereira 

 ("pear-tree") bark, an active febrifuge and astrin- 

 gent. Unof. 



Geitonogamy [gi-ton-og / -am-e) [ yeiruv, a neighbor; 

 ydfiog, marriage]. In biology, fertilization of one 

 flower by pollen from another flower of the same 

 plant. 



Gelasma {jel-az 1 '-mah) \_-.i{tac>ua, laughter], or Gelas- 

 mus (jel-az'-mus) [}e/.a<x-oc, laughable]. Insane or 

 hysteric laughter. 



Gelatin ( ft I'-at-in) [gelare, to congeal]. An albumi- 

 noid substance of jelly-like consistence, obtained by 

 boiling skin, connective tissue, and bones of animals 

 in water. The glue of commerce is an impure variety. 

 See Glue. G.Bath. Sue Bath. G., Blasting. See 

 Blasting Gelatin. G. Capsules, capsules of gelatin 

 designed for containing medicines of nauseating taste. 

 G. Culture-medium, a jelly made by a solution of 

 the best commercial food-gelatin in the proportion of 

 6, 8, or 10 parts to loo of water, with I or 2 parts of 

 dried peptones or glucose (the latter not to be used if the 

 culture is to be made on slides) for increased nutri- 

 tive value. Bicarbonate of soda is used to neutralize 

 the acid reaction. This, in bacteriology, is simply 

 known as Gelatin. G. -dynamite. See Blasting 

 Gelatin. G., Liquid, a substance for fastening paper 

 to glass, wood, or paper; its formula is: — 



Gelatin or clear glue, 75 to 100 grams (3X) 



Commercial acetic acid (No. 8) iooc.c. (3.4c 3) 



Water iooc.c. (3.4 fS) 



95 per cent. Alcohol 100c c. I3.4 f 3) 



Glycerin 15 to 30 c.c. (\i to 1 fS) 



Crush the glue and put it into a bottle with the acid ; 

 set in a warm place and shake occasionally. After 

 three or more days add the other ingredients. G., 

 Medicated, a soft basis consisting of gelatin 3, zinc 

 oxid 3, glycerin 5, water 9 parts, to which antiseptic 

 or other medicaments may be added. It is preferable to 

 greasy ointments. All unof. G. Sugar. See Glycin. 



Gelatinigerous [jel-at-in-if'-er-us) [gelatina, gelatin ; 

 gerere, to bear]. In biology, applied to such organ- 

 isms as secrete a gelatinous investment. 



Gelatinoid ( jel' '-at-in-oid ') [gelare, to freeze; eldoc, 

 likeness]. I. Resembling gelatin. 2. Any member 

 of a class of nitrogenous substances, including chon- 

 drin, collagen, elastin, gelatin, etc 



Gelatinous {jet-af '-in-us) \_gelare, to freeze]. Resem- 

 bling or having the nature of gelatin. G. Tissue. 

 See Animal Tissue. 



Gelatio {jel-a f -she-o) [I-]. Synonym of Frostbite. 



Gelation {jel-a' -shun) [gelatio, a freezing], 1. Freez- 

 ing; congelation; also frost-bite, or chilblain. 2. 

 < atalepsy. 



Geld [ME. , gelden, to castrate]. To castrate; to emas- 

 culate. 



GEMINOUS 



Gelding (gel'-ding) [ME.., gelding, a eunuch]. 1. I 



(ration. 2. A castrated person or animal. 

 Gelidium [iel-id* -e-um) [gelum, cold], A genu- of 

 seaweed. G. corneum, affords gelosin, and others, 

 as G. spiniform, supply some portion ol the agar ■: 

 of commerce. 



Gelle's Experiment. A diminution of the bone-con- 

 duction of sound resulting from the 

 air in the external auditory canal. 



Gellert's Green. Same as Rinmann's Gt 



Gelose ( jet-fa'") [gelare, to freeze]. 1. The gelatiniz- 

 ing principle "i agar-agar. 2. A culture-medium 

 used in bacteriologic investigation. Gelatin liqu< 

 at 23 or 24 C, and 1- thus inferior to gelose !"i 

 those cultures that require a higher degree <.t In-.;' 

 their proper development Agar-agar contains a 1 

 siderable proportion of chemic gelose. < )( the agar- 

 agar a jelly is mai |. , 2 to 3 parts (to loo) of dried pep- 

 tone added; io to 15 pari "i this substance I 

 parts of water, with I to 5 of glycerin, form a nutri- 

 tive jelly which is called gelose, from its essential in- 

 gredient. It is also called Parabin. 



Gelosin i j,i'-o-sin) [gelare, to freeze]. A mucilage 

 resembling gelose, and extracted from some kind- ol 

 agar- agar and from various species of algae. It 1- sol 

 uble in water and alcohol, and is an excellent excipient 

 lor powder-, tincture-, and salt-, ami is serviceable in 

 bacterial cultures. Unof. 



Gelsemin {jel r -sem-in) [ vtinum, jasmine]. 1. 



CjjH 19 N0 2 , a poisonous .alkaloid from Gelsemium, 

 q. 7'. 2. A precipitate or resinoid from a tincture 

 of the root-bark of Gelsemium sempervirens ; it i- a 

 febrifuge, antispasmodic, emmenagogue, and nar- 

 cotic; dose 5 to 1 grain. Unof. 



Gelseminin (jel-sem'-in-in) [gelseminum, jasmine]. 

 An alkaloid of Gelsemium. It is an amorphous yel- 

 lowish-white, bitter, very poisonous powder, soluble 

 in ether and chloroform, less so in alcohol and water. 

 Dosegr. ^-^5- 



Gelsemium (j'el-se / -me-um) [gelseminum, jasmine], 

 C n H 19 N0 2 . Yellow Jasmine. The root of G. sem- 

 pervirens, abundant in the southern U. S., with prop- 

 erties mainly due to an alkaloid, gelsemin, a powerful 

 motor depressant, antispasmodic, and diaphoretic. In 

 toxic doses it produces diplopia, extreme muscular 

 weakness, and anesthesia, death occurring from 

 phyxia. It is useful in exaltation of nerve-action and 

 in cerebro-spinal meningitis, and is especially valuable 

 in remittent and malarial fevers. Dose gr. ij-xx. G., 

 Ext., Alcoholic I'., l.i. Dose gr. %-%. G., Ext., 

 Fid., alcoholic. Dose rt^ij-xx. G., Tinct., 15 per 

 cent, in strength. Dose n\x-^j. Gelseminin, the 

 alkaloid. Dose gr. ,',.-:„■ G., Hydrochloras, 

 freely soluble in wat gr. ^-jV G., Hydro- 



chlorat., Liq., one grain in one dram. Dose mj- 

 iij, hypodermaticaUy. 



Gely's Suture. See Suture. 



Gemellus ( jem-el'-us) [dim. of geminus, twin]. Double. 

 In pairs. G. Muscle, the gastrocnemius muscle, on 

 account of its double origin. See Muscles, Table of. 



Gemina f jem'-in-ah) [I... twins]. A name for the cor- 

 pora quadrigemina, or optic lobes. They constitute 

 the larger part of the mesoccelian roof. 



Geminate {jem'-in-at) [geminus, a twin]. In pairs. 

 In biology, parts that are disposed in pan 



Geminiflor'ous {jem-in-if-lo' -rus) [geminus, twin; 

 flos, flower]. In biology, applied to plants that pro- 

 duce flowers in pairs. 



Geminous {jem' '-in-us) [geminus, a. twin]. Same as 



minute. G. or Connate Teeth, twin-formation 



of two teeth from the occurrence of a double dental 



germ in a single sac, from which are developed two 



