5-i 



GLOSSARY. 



Ecto'pia (Gr. e'/e, ek, out ; TOTTOS, 

 top'os, a place). A displacement. 



Ectro'pium (Gr. K, eJc, out ; rpeTrcu, 

 trepo, I turn). A disease in which 

 the eyelashes are turned outwards. 



Ec'zema (Gr. e-, ek, out ; Cew, Ze5 I 

 boil). An eruption on the skin, 

 of small pustules, without fever, 

 and not contagious. 



Ede'ma, Edem'atous. See (Ede'ma and 

 (Edem'atous. 



Eden'tate (Lat e, out ; dens, a tooth). 

 Without teeth ; applied to an order 

 of mammalian animals which have 

 no front teeth. 



Eden'tulous (Lat. e, out ; dens, a 

 tooth). Without teeth. 



Ed'ible (Lat. edo, I eat). Fit to be 

 eaten as food. 



Edrioph'thalmia (Gr. eS/ja, hedra, a 

 seat ; o$0oA,uos, ophthal'mos, an 

 eye). A section of crustaceous 

 animals, having the eyes sessile, or 

 not mounted on a foot-stalk. 



E'duct (Lat. e, out ; duco, I lead). 

 Any thing separated from another 

 with which it was previously com- 

 bined. 



Efferves'cence (Lat. ex, out ; fer'veo, 

 I boil). The escape of bubbles of gas 

 from a fluid, not produced by heat. 



Efflores'cence (Lat. ex, out ; fas, a 

 flower). In botany, the time of 

 flowering ; in medicine, an eruptive 

 redness of the skin ; in chemistry, 

 the formation of a dry powder in 

 some salts on exposure to the air, 

 by losing water of crystallisation. 



Efflu'vium (Lat. ex, out ; flu<>, I 

 flow). A flowing out ; the minute 

 particles which exhale or pass off 

 into the air from substances. 



Efflux (Lat. ex, out ; /wo, I flow). 

 A flowing out. 



Effodien'tia (Lat. effo'dio, I dig out). 

 Digging : applied to a family of 

 edentate animals from their digging 

 habits, as the armadillo. 



Effu'sion (Lat. ex, out ; fundo, I 

 pour). A pouring out ; the escape 

 of a fluid from the vessel or cavity 

 containing it. 



Ei'dograph (Gr. ttSos, eidos, form ; 

 ypa<j>w, grapho, I write). An in- 

 strument for copying designs. 



Ejec'tion (Lat. e, out ; jacio, I cast). . 

 A casting out. 



Elaborate (Lat. e, out ; lalo'ro, I 

 labour). To produce by labour, 

 or by successive operations. 



Elain (Gr. lAouoc, elai'nn, oil) . The 

 liquid principle of oils and fats. 



Elas'tic (Gr. c\awo), elau'no, I drive). 

 Having the property of springing 

 back to its original form after this 

 has been altered. 



Elasticity (Gr. e\awca, elau'no, I 

 drive). The property by which a 

 body, after having been compressed, 

 or having had its form changed, 

 recovers its original shape on being 

 released from the force applied to it. 



El'ater (Gr. e\aww, elau'no, I drive). 

 A spiral fibre in the theco3 or seed- 

 cases of some cryptogamic plants, 

 serving to disperse the sporules by 

 uncurling. 



Elec'tive Affinity (Lat.e'%o, I choose 

 out). The disposition which bodies 

 have to unite chemically with cer- 

 tain substances in preference to 

 others. 



Elec'tric (Gr. yheKTpov, electron, 

 amber). Containing, pertaining to, 

 derived from, or communicating 

 electricity. 



Elec'tricity (Gr. yXeKrpov, elek'tron, 

 amber ; became first observed in 

 amber). A series of phenomena 

 (also their cause) in various sub- 

 stances ; supposed to-be clue to the 

 presence of a compound fluid, which, 

 is developed by friction or other 

 mechanical means. 



Elec'tro-chem'istry. The science which 

 explains the phenomena of the de- 

 composing power of electric currents. 



Electro-mag'netism. The branch of 

 electrical science which explains the 

 phenomena of the action of a voltaic 

 current on the magnetic needle. 



Elec'trify (Electricity; Lat. facio, I 

 make). To charge with, or affect 

 by, electricity. 



Elec'trode (Electricity; Gr. <55os, 

 hodos, a way). The termination 

 of a voltaic battery, by which the 

 electricity passes into or from the 

 fluid in which it is placed. 



Electrology (Electricity ; Gr. 



