A GLOSSARY OF TERMS 



bitten by an animal : applied to 

 the margin of certain leaves. 



ERO'SIOW. The act of wearing 

 away. 



EUO'SIVE. Corroding, wearing. 



EROSO-DENTATE. The toothing be- 

 ing eroded. 



ERRATIC BLOCK FORMATION. (p. 93. 

 Book viii). See BOULDER. 



ERU'PTIOX. fr. lat. e, from ; rumpo, 

 I burst. The act of bursting from 

 any confinement. 



EHYTHA'CUS fr. gr. erithakos, an un- 

 known bird that was taught to 

 imitate words. The specific name 

 of the gray parrot. 



ERYTHROCE'PHALUS. fr. gr. eruthros, 

 red ; kephale, head. Red-head. 

 The systematic name of the wood- 

 pecker. 



ESCA'RPMEJTT. fr. it. scarpa, sharp ; 

 formed fr. lat. carpere, to cut or 

 divide. The steep face often 

 presented by the abrupt termina- 

 tion of strata where subjacent 

 beds "crop out" from under them. 



ESCHAROIDES. fr. gr. eschara, a fire- 

 place, a gridiron; Wos, resem- 

 blance. Specific name of a coral. 



ESCULE'XTA. Lat. Esculent, edible. 



E'SOCES. Lat. plur. of esox. 



Esox. Lat. Generic name of the 

 pike. 



ESPALIER. fr. it. spalliere. Trees 

 which are attached to, and sup- 

 ported by a wall, in a row. 



ESSE'JTTIAL OILS, or VO'LATILE OILS. 

 Under this term are included 

 all those peculiar compounds ob- 

 tained by distilling vegetable sub- 

 stances with water ; and which 

 pass over along with the steam, 

 and are afterwards condensed in 

 the liquid, or solid form. They 

 appear to constitute the odorous 

 principle of vegetables. 



ESTIVA'TIOJT. See ^Estivation, (p. 

 76, Book vii). 



ESTUARIES. fr. lat. astus, the tide. 

 Inlets of the land, which are en- 

 tered by tides of the sea, and by 

 rivers. 



ETJE'RIO. fr. gr. etaireia^ a friendly 

 union. An aggregate fruit with 

 distinct ovaries and an indehis 

 cent pericarp, as the strawberry. 



ETHE'RIA. fr. gr. aitho, I shine. 

 Name of a genus of the family of 

 ostracea. (p. 75, Book v). 



ETHE'RIJE. Lat. plur. of Etheria. 



ETHMOID. fr. gr. ethmos, a sieve ; 

 eidos, resemblance. The ethmoid 

 bone, so called because its upper 

 plate is pierced by a considerable 

 number of holes, is situate at the 

 base of the cranium betwixt the 

 orbits. 



ETHNOGRAPHY. fr. gr. ethnos, a race ; 

 grapho, to describe. That depart- 

 ment of science which treats of 

 the origin, migrations and con 

 nexion of various peoples. 



ETIOLATED. Whitened ; bleached. 



ETioLA'TiON.-The process of blanch- 

 ing plants, by. sheltering them 

 from the action of light. 



EUNI'CE. Gr. A genus of anneli- 

 dans. 



EUOM'PHALUS. fr. gr. eu, properly; 

 omphalos, the navel. A gastero- 

 pod mollusk. (p. 39, Book viii). 



EU'PHOTIDE. A rock composed es- 

 sentially of feldspar arid diallage. 



EUPHORBIA'CEJE. From eupho'rbium, 

 which was named in honour of 

 Euphorbus, physician to king Ju- 

 ba. Name of a family of plants. 



EVEROREEW. Applied to plants 

 which have persistent or peren- 

 nial leaves. 



E' VOLUTE. Unrolled. 



EvoLu'TUS.-Lat. Unfolded, evolved. 



ExALBu'MiNous.-Without albumen. 

 Applied to those plants the seedj 

 of which are without albumen. 



EXCAVATED. Hollowed out. 



EXCE'LSA. Lat. Noble, tall, stately. 



EXCI'PULUS. That part of the thai- 

 lus which forms the rim and basa 

 of the shields of lichens. 



EXCO'RIATE. Stripped of the bark 

 or skin. 



