EUCALYPTOCRINUS 



122 



EVECTION 



longing to Myrtaceae. E. globulus = Elae 



gum tree. 

 Eucalyptocrinus, (u-ka-lip-to-krl'nus). [Gk. 



eu, well; kalyptos, covered; krinon, lily.] 



A fossil belonging to Crinoidea. 

 Euchlorine, (u'klo-rm). [Gk. eu, well; Chlo- 

 rine, q.v.] A compound of chlorine and 



oxide of chlorine. 

 Euchroic acid, ( u-krS'ik ) = Cja^NaOs : a 



crystalline acid substance. 

 Euchroite, (u-kro'it). A mineral, chiefly 



arsenate of copper. 

 Euclase, (uTdas). [The French name.] A 



mineral, chiefly silicate of aluminum and 



glucinum: also called Prismatic Emerald. 

 Eudialyte, (u'di-a-lit). [Gk. eudialytos, soon 



dissolved.] A mineral, chiefly silicate of 



zirconium, sodium, and calcium. 

 Eudiometer, (u-di-om'e-ter). [Gk. eudia, calm 



weather; metron, measure.] An 



apparatus for the measurement 



of gases. 

 Eudiometry, (u-di-om'e-tri). The 



measurement of gases. 

 Eudoxus, (u-doks'us). A crater, 



46 miles diameter, one of the 



grandest in the moon. 

 Eugenic acid, (u-jen'ik)=Ci H 12 



62: an oil; also called Eugenol 



and Caryophyllic Acid. 

 Eugenia, (u'jen-in). A white 



luminous substance obtained 



from cloves : also called clove 



camphor. Eudiometer. 



Euglense, (u'glen-e)=Ciliated infusoria. 

 Eugnathus, ( ug-na/thus ). [Gk. eu, well; 



pnathos, jaw.] A Liassic fish belonging to 



Lepidoganoidei. 

 Eukolyte, (u'ko-Ht). A mineral, probably= 



Eudialyte, q.v. 

 Eulor's theorem of consonance. That it is the 



pleasure derived from the easy perception of 



order. 



Eulyte, (u'lIt)=C 6 H 6 N40 7 : a crystalline sub- 

 stance obtained from citraconic acid. 

 Eulvtin,(u'lI-tin)=Bismuth blende, v. Blende. 

 Eumenidae, (u-men'i-dS)=Solitary wasps. 

 Euomphalus, ( u-om'fa-lus ). [Gk. eu, well; 



omphalos, navel.] A Gasteropod, often of 



large size, with whorled shell bosses, found 



in Palaeozoic strata. 

 Euonymite, (u-on'i-mit). [Euonymus, q.v.]= 



C 6 H 14 O 6 : a saccharine substance obtained 



from the spindle tree. 

 Euonymus, (u-on'i-mus). [Gk. euonymos, of 



good fame.]=Spindle tree: a tihrub or tree, 



with poisonous berries, belonging to Celas- 



traceae. 

 Euosmite, (u'os-mlt). [Gk. eu, well; osme, 



smell.] A fossil resin found in beds of lignite. 



Eupatorium, ( u-pa-td'ri-um ). = Hemp agri- 

 mony: an herb belonging to Asteraceae. 



Euphorbia, (u-for'bi-a). [Gk. euphorbia, fer- 

 tile. ]= Spurge: an herb belonging to Euphor- 



biaceae. 



Euphorbiacese, (u-for-bi-a'se-ti). [Euphorbia, 

 q.v.] Herbs, shrubs, and trees, sometimes 

 with milky sap, mostly poisonous, belonging 

 to Euphorbiales. 



Euphorbiales, (u-for-bi-a'lez). [Euphorbia, 

 q.v.] Plants with scattered flowers, and 

 embryo with abundant albumen, forming a 

 division of Diclinous Exogens. 



Euphorbium, (u-for'bi-um). [Euphorbia, q.v.] 

 A resin obtained from Euphorbia. 



Euphoria, (u-fo'ri-a), a plant belonging to 

 Sapindaceae. 



Euphrasia, (u-fra'si-a). [Gk. euphraino, I 

 delight.]=Eyebright: a parasitic herb be- 

 longing to Scrophulariaceae. 



Euphyllite, (u'fil-lit). [Gk. eu, weU; phyllon, 

 leaf.] A variety of mica. 



Eupione. A hydrocarbon, obtained in distil- 

 lation of wood, coal, &c. 



Euplexoptera, ( u-pleks-op'ter-a ). [Gk. eu, 

 well; pleko, I plait; pteron, wing.]=Earwigs: 

 a term proposed by Jones to form a fresh 

 family out of Orthoptera. 



Eupoda, (u'po-da). [Gk. eu, beautiful; pous, 

 foot.] A primary division of beetles=Phy- 

 tophaga, q.v. 



Euroclydon, (u-rokli-don). [Gk. euros, east 

 wind; klydon, wave.] A tempestuous wind 

 common in the Mediterranean Sea. 



Euryalid, (u-ri'a-lid)=Asteronyx loveni: an 

 ecbiuoderm of Scandinavia. 



Eurynotus, (u-ri-no'tus). [Gk. eurya, broad; 

 notos, back.] A Lepidoganoid fish found in 

 Carboniferous rocks. 



Eurypteridae, ( u-rip-ter'i-de ). [Eurypterus, 

 q.v. ] Crustaceans, known only by Palaeozoic 

 fossils, often of large size. 



Eurypterus, (u-rip'ter-us). [Gk. eurys, broad; 

 pteryx, fin.] A Crustacean, sometimes eight 

 feet long, belonging to Entomostraca, found 

 in Palaeozoic rocks. 



Euryte, (u'rit). [Gk. eureo, to flow well]. A 

 mineral: a fine variety of granite, which fuses 

 easily. 



Eustachian tubes, (u-staVki-an). [Signer Eus- 

 tachias.] Tubular passages from the ear 

 opening into the pharynx, serving to keep 

 the interior of the tympanum supplied with 

 air, so as to keep the pressure on the two 

 sides equal. E. valve: a rudimentary fold 

 in the membrane of the heart. 



Euterpe, (u-ter'pe). [Classical.] A plant. E. 

 oimicea=Assai. 



Euxanthic acid, (u-ksan'thik). CziRi8Ou= 

 Purreic acid, q.v. 



Euxenite, ( u'ksen-it ). A mineral, chiefly 

 yttria and columbic acid. v 



Euzeolite, (u-ze'o-lit). [Gk. eu, well; Zeolite, 

 q.v.) l: A Variety of Stilbite, q.v. 2. A 

 variety of Heulandite. 



Evansite, (ev'an-sit). [Mr. Evans.] A mine- 

 ral, chiefly hydrated phosphate of alumin urn. 



Evapometer, (e-vap-om'e-ter). [Evaporation 

 and Meter, q.v.] An instrument for measur- 

 ing the amount of evaporation. 



Evaporation, (e-vap-o-ra'shun). [Evaporatio, 

 the Latin word.] 1. The slow conversion of a 

 liquid into vapour, which takes place at the 

 surface at all temperatures. 2. Driving off 

 a solvent, in vapour, by the operation of 

 heat. 



Evection, (e-vek'shan). [Evectio, the Latin 

 word.] v. Libration. 



