EUP 



EVE 



part, the nose spread and almost con 

 founded with the cheeks, the lips, parti- 

 cularly the upper one, very thick. 



ETHNO'GRAPHY {^Ovo^, a race, 

 7pa0Cf), to describe). A historical inves- 

 tigation into the origin, migrations, and 

 connexion of various peoples. In this 

 sense, ethnography is purely of a his- 

 torical character, and may be considered 

 as distinct from anthropography. A series 

 of anthropograpAies, of difterent epocns, 

 vrould form the true basis of ethno- 

 graphy. 



ETHU'LE {a\eh(>, ether, uXrj, matter). 

 A hypothetical radical, existing in ether 

 and its compounds ; ether being the 

 oxide of ethule, and alcohol the hydrated 

 oxide of ethule. 



ETIOLATION. The process of blanch- 

 ing plants, as celery, kale, &c., by shel- 

 tering them from the action of light. 

 The natural colour of the plants is thus 

 prevented from being formed. 



ETYMO'LOGY (t6 '4rvixov, the deriva- 

 tion of a word from its root, Xo'fo':, an 

 account). That part of Grammar which 

 treats of the formation of words. Under 

 this general definition are included the 

 classification of words, the various modi- 

 fications they undergo to express different 

 meanings, and their origin and history. 



EUCHLORINE {d>, brilliant, x^wpof, 

 green). The name given by Davy to the 

 protoxide of chlorine, from its being con- 

 siderably more brilliant than simple chlo- 

 rine. 



EU'CHRONIC ACID (eu'xpoof, of a 

 fine colour). An acid procured by the 

 decomposition of the neutral mellitate of 

 ammonia by heat. It forms a blue com- 

 pound with zinc, called euchrone. 



EU'CLASE {el, well, kX^o), to break). 

 Prismatic emerald; a beautiful mineral 

 found in Peru and Brazil. 



EUDFALITE. A brownish-red mine- 

 ral, belonging to the tessular system of 

 Mohs. 



EUDIO'METER {evdia, calm weather, 

 ixerpov, a measure). An instrument for 

 ascertaining the purity of the air, or, 

 rather, the proportion of oxygen con- 

 tained in a given gas. 



EUKAIRITE. A new mineral found 

 in the copper mine of Skrickerum, and 

 consisting of silver, selenium, copper, 

 and alumina. 



EUPHE'MISM ieixpnUila, the use of 

 words of good omen). A mild name for 

 a bad thing; a rhetorical figure em- 

 ploj'ed to prevent giving offence to " ears 

 polite," and adopted, in daily use, in 

 130 



deference to the fastidiousness which 



prevails on certain points : " Strabonem 



Appellat Pcetum pater ; et Pullum, 



male parvus 

 Si cui filius est," &c. 



EU'PHONY {eixpcovia, goodness of 

 voice). An agreeable quality of language 

 arising from the harmonious combination 

 of sounds. It consists in an uninter- 

 rupted flow of words, which neither im- 

 pedes the speaker's utterance, nor offends 

 the hearer's ear ; and is opposed to caco- 

 phony, or a harsh and disagreeable style. 



EUPHORBIA'CE^. The Euphor- 

 bium tribe of Dicotyledonous plants. 

 Trees, shrubs, and herbaceous plants, 

 with leaves alternate ; flowers apetalous, 

 unisexual ; ovarium three-celled, the cells 

 separating with elasticity from their com- 

 mon axis. 



EU'PHOTIDE. A rock consisting 

 essentially of felspar and diallage, aggre- 

 gated together in the manner of granite. 

 The Italian artists call it gabbro. 



EUPION {el, well, tt/oji/, fat). A 

 colourless liquid, obtained by distillation 

 from the tar of animal matters, and so 

 named from its great limpidity. 



EUPY'RION {el, easily, irZp, fire). 

 Any contrivance for obtaining an instan- 

 taneous light, as the phosphorus bottle. 



EURITE, or WHITESTONE. A va- 

 riety of granite, in which felspar is the 

 predominant ingredient ; or in which all 

 the ingredients are blended into a finely 

 granular mass of a white appearance. 



EVAPORATION. I . Spontaneous eva- 

 poration is the production of vapour by 

 some natural agency, without the direct 

 application of heat, as on the surface of 

 the earth or ocean. This is commonly 

 termed exhalation. 2. The chemical ope- 

 ration is usually performed by applying 

 heat to any compound substance, in order 

 to separate the volatile parts, which are 

 dissipated and lost. In this respect, eva- 

 poration differs from distillation, which 

 chiefly consists in preserving the volatile 

 parts. 



EVE'CTION {eveho, to raise up). A term 

 applied to certain irregularities, con- 

 sisting of elongations or contractions, of 

 the moon's orbit. They depend upon the 

 varying attraction exercised by the earth 

 upon the moon, according as the latter is 

 in apogee or perigee, and as consequently 

 more or less under the influence of the 

 sun's attraction. They are periodical, 

 running through all their changes in 

 about twenty-seven days. See Angle of 

 Evection. 



