EMBRYONIC 



115 



ENDLICHER'S 



gradual development from the germ stage to 

 the ad ult form ; a sub-division of Biology, q.v. 



Embryonic, (em-bri on'ik). [Embryo, q.v.} 

 Rudimentary: belonging to an embryo. 



Emelinite:=Chabazite, q.v. 



Emerald, (em'er-ald). [Emeraude, the French 

 name.] A brilliant greenstone, a silicate of 

 aluminum and glucinum; a pure variety of 

 beryl; a mineral of the topaz group, crys- 

 tallising in hexagons. Oriental E.: a green 

 variety of sapphire. E. copper=Dioptase. 



Emersion, (e-mer'shun). [ L. eniergo, I come 

 forth.] The re-appearance of a planet, &c., 

 after eclipse; the opposite of immersion, q.v. 



Emery, (em'er-i). [Cape Emeri, in Naxos.] A 

 coarse variety of corundum or native alumina. 



Emetine, (em'e-tin). A base obtained from 

 ipecacuanha; used as an emetic. 



Emeu, (e'mu)=Emu=Drornaius: a bird of the 

 ostrich kind, found 

 in New Holland, 

 belonging to Stru- 

 thionidse. 



Emission theory of 

 light. That light 

 is the effect of 

 emission of infin- 

 itely minute par- 

 ticles of matter. 



Emmet, ( em ' et ). 

 (jEmet, the A.-S. Emeu. 



name.]=Ant, q.v.: nearly obsolete. 



Emperor moth=Saturnia pavonia: named 

 from its large size. 



Empetracese, (em-pet-ra'se-e). [Empetrum, 

 .v.]=Crowberries: small heath-like shrubs, 

 with small flowers.belonging to Euphorbiales. 



Empetrum, ( em'pet-rum ). [Gk. en, upon; 

 petron, a rock.]=Crowberry: a shrub, com- 

 mon in stony places, with small flowers and 

 edible berries, the type of Empetraceae. 



Empusa. An insect belonging to Orthoptera. 

 E. muscce: parasitic on flies. 



Emu=Emeu, q.v. 



Emulsic acid, (S-mul'sik). [Emulsin.] An 

 acid derived from Emulsin. q.v. 



Emulsin, (6-mulsin). [L. emulgeo, I milk.] 

 =Synaptase: a substance, found in almonds, 

 which acts as a ferment on amygdalin, and 

 converts it into glucose, &c. 



Emulsion, (e-mul'shun). [L. emulgeo, I milk.] 

 A compound of oil and water obtained by 

 use of a third body, such as which will com- 

 bine with both, named from often having a 

 milky appearance. 



Emys's system, [M. Emys, the inventor. [ 

 Of constructing large arches by a number of 

 united layers of timber. 



Emys, (em'is). [The Latin name.]=Terrapin 

 ^Speckled tortoise=Testudo orbicularis; a 



-fresh-water tortoise belonging to Chelonia. 



Emysaura, (em-i-saw'ra). [Emys and Sauria, 

 Q.v.} A tortoise resembling the Emys found 

 in America. 



Enaima, (en-a'ma). [Gk. enaimos, having 

 blood.] Aristotle's term for Vertebrata. 



Enaliosauria, (en-al-i-o-saw'ri-a). [Gk. en, in; 

 hals, sea; saura, lizard. ]=Ichthyopterygia 

 and Sauropterygia. 



Enaliosaurian, (e-nal-i-o-saw'ri-an). [Gk. en- 

 alyos, living on the shore; Saurian, q.v.} 

 Fossil reptiles of the Lias strata, including 

 the Ichthyosaurus and Plesiosaurus. 



Enamel, (en-am'el). [Esmail, the French 

 word.] 1. A hard glossy substance, forming 

 the crown of teeth, composed chiefly of phos- 

 phate and fluoride of lime. 2. Artiflcal com- 

 pounds containing glass. 



Encaustic, ( en-kaw'stik ). [L. encausticus, 

 burnt in.] Having a pattern, usually of 

 different colour, burnt in: used for tiles, &c. 



Enceinte, ( ang-sant' ). [The French word.] 

 The outer wall of a fortification; the general 

 enclosure. 



Encephala, (en-sef'a-la). [Gk. en, in; kepliale, 

 head.]=Cephalophora: a primary division 

 of Mollusca=Gasteropoda, Pteropoda, and 

 Cephalopoda. 



Encephalartos, (en-sef-a-lar'tos). [Gk. en, in; 

 kephale, head; artos, bread.]=Caffer-bread ; 

 a tree, belonging to Cycadacese, found in 

 Africa, from the starch of which bread is 

 made. 



Encephalon, (en-sefa-lon). [Gk. en, in; Tcepli- 

 ale, head.]=Brain : the whole brain, in- 

 cluding so much of the spinal cord as is 

 within the head. 



Enchanter's nightshade=Circsea : a slender 

 herb, with small flowers and creeping root- 

 stock, belonging to Ouagracese. 



Encke's comet. [Prof. Eucke of Berlin.] A 

 telescopic comet of short period, returning 

 every 3J years. This period is shorter by 

 some two hours each recurrence. 



Encrinal marbles, (en-kri'nal). [Encrinites, 

 q.v.] Containing encrinites. 



Encrinites, (en'krin-lts). [Gk. krinos, lily.] 

 l.=Stone lilies: fossil Crinoidea, found in 

 all rocks since the Palaeozoic, inclusive. 2.= 

 Crinoidea, q.v. : a division of Echinodermata. 



Encrinus, (en-kri'nus). [Gk. krinos, lily.]= 

 Stone-lily. 



Encystment, ( en-sist'ment ). [Gk. kystis, 

 bladder.} A metamorphosis in some proto- 

 zoa, during which they are motionless, and 

 enclosed in a cyst; a method of reproduction. 



Endecagon, ( en-dek/a-gon ). [Gk. hendeka, 

 eleven; gonia, corner.] A regular plane 

 figure having eleven sides and eleven angles. 



Endellipnite, (en'del'yu-nIt)=Bournonite, q.v. 



Endemic, (en-dem'ik). [Gk. en, among; demos, 

 people.] Peculiar to a certain locality or 

 people. E. diseases: Anaemia, Goitre, 

 Phthisis, Stnunous, &c. 



Enderon, (en'der-on). fGk. en, in; deros, 

 skin.]=Dermis : the inner or true skin. 



Endive, (en'div). [The French name.]= 

 Cichoritrm endivia : an herb, belonging to 

 Cichorium, used as a salad. 



Endlicher's arrangement of plants, made in 

 1840, in use in Germany 

 Thallophyta 

 Protophyta. 

 Hysterophyta. 

 Cormophyta 

 Acrobrya. 

 Amphibrya. 

 Acramphibrya. 



