Eucope 
coi>id<r. K. varialiili* is an example. Gegen- 
baur, 1856. 
Eucopidae (u-kop'i-de), n. i>l. [NL., < A.'ro/ 
+ -ida'.] A family of vesiculate or eampanu- 
lariaii Ili/ili-'inirilnxir: s;nm- an ('itiiii><tiiitlfil<i . 
eucrasyt (u'knj-si), . [< (Jr. I'mpaaia, a good 
temperature, mildness (of the air, etc.), a good 
temperament, < nw/xirof, well-tempered, tem- 
perate, < n>, well, + KcpaiTi ''i -a/, mix : see (Taxis, 
crater.] In //., tliat combination of qualities 
in the body which constitutes health or sound- 
ness. 
eucrite (u'krit), . [< Gr. dutpirof, easy to dis- 
cern, < ev, well, + Kpiveiv, discern, decide.] A 
name proposed by Rose for all massive anor- 
thite-augito rocks, similar to Zirkel's designa- 
tion corsite for those composed of auortnite 
and hornblende. 
eucryptite (u-krip'tit), . [< Gr. einpvirrof, easy 
to be hidden (< ci' 1 , well ? + HpvirreiVj hide), -r 
-Hi'-.] A silicate of aluminium and lithium as- 
sociated with albite as alteration products of 
gpodumt'iir. 
eucticalt (iik'ti-kal), o. [< Gr. evuTuifc, express- 
ing a wish, votive, optative, < CVKTOS, wished 
for, desired, < ti>xea6ai, wish for, vow, pray.] 
Containing acts of supplication ; supplicatory ; 
precatory. 
The euctical or eucharistical offering mu&t consist of 
three degrees or parts ; the offering of the heart, of the 
mouth, of the hand. ./. !/-,/.', Discourses, i. 48. 
Sacrifices . . . distinguished into expiatory, euctical, and 
eucharistical. Law, Theory of Keligion, p. 226. 
encyclic (u-sik'lik), a. [< Gr. ri, well, + /cwcAiicor, 
circular : 'see cyclic.] In hot., isomerous, with 
regular alternation of parts : applied to flowers 
in which the petals, stamens, etc., are equal 
in number in each whorl, and alternate with 
one another. 
Eucyrtidiidse (u-ser-ti-di'i-de), n. pi. [NL., < 
Euryrtidium + -ida:.] A family of polycystine 
monocyttarian radiolarians, typified by the ge- 
nus Kitcurtiilium. 
Eucyrtidium (u-ser-tid'i-um), n. [NL., < Gr. 
ev, well. + Kvprifiov, dim. of Kiiprof, itiipnj, a fish- 
ing-basket, creel, < Kvpr6f, bent, curved.] The 
typical genus of the family Eucyrtidiidte, or 
referred to the family I'olyci/stiiiida;. E. galea 
and E. cranoides of Haeckel are examples. 
eudemon. eudaemon (u-de'mon), n. [< Gr. ev- 
Aaifiuv, adj., blest with a good genius, fortunate, 
happy, < ev, well, + faifiuv, a genius, spirit, etc. : 
see demon. Cf. Agathod&mon, cacodemon.] 1. 
A good angel or spirit. 
The simple appendage of a tail will cacodemonize the 
Eudainon. Southey, The Doctor, Fragment on Beards. 
2. In astral., the eleventh house of a celestial 
figure: so called on account of its good and 
prosperous significations, as store of friends, 
attainment of hopes, etc. E. Phillips, 1706. 
eudemonics (u-de-mon'iks), . [< Gr. eviaifto- 
vuta, the constituents of happiness, neut. pi. of 
t Maif^oviKOf , conducive to happiness, < ti-iai/uw, 
happy: see <'iitlcn>ii.~\ Eudemonism. 
eudemonism, eudsemonism (u-de'mon-izm), n. 
[< Gr. eMat/un>tofi6f, a thinking happy, < riidat- 
fiovifetv, think or call happy, < cMai/tuv, having 
a good genius, happy, fortunate : see eudemon 
and -!>.] The doctrine of happiness, or the 
system of philosophy which makes human hap- 
piness its highest object, declaring that the pro- 
duction of happiness is the sole criterion for 
the validity of moral maxims; hedonism. Some 
writers ilistinguisli fmlfnumium, as inelmling the satis- 
faetionof altruistic sentiments under happiness, from the 
purely egoistic hrdnnimii. 
Ethics braced up into stoical vigour liy renouncing all 
rfffim'natf ilaM.uir.-H ith !:, liriiioiiimn would indirectly 
have co-operated with the sublime ideals of Christianity. 
H:' IJuiiuxy, Last Days of Kant. 
The discussion of the different sorts, degrees, and con- 
sequences of enjoyment led to the true rudamonitm of the 
Epicureans, who taught that mental pleasure was prefer- 
able to that of the senses, ami that friendship, and freu- 
doni from passion and dc<ire, were the supreme forms of 
happiti. ^ O. ti. Hall, Cermau Culture, p. 179. 
eudemonist (u-de'mon-ist), n. [As eudemonism 
+ -int.] A believer'in eudemonism. 
I am too much of a fiidrmimiitl ; I hanker too much af- 
ter a state of happiness both for myself and others. 
De V 
eudemonistic (u-de-mon-is'tik), a. [< eudemon- 
ist + -if.] Of or pertaining to eudemonism. 
The mundane positive ctuttenwHwtic morality. 
a. S. Hull, Cermau Culture, p. 178. 
Christianity itself proceed* from a fitiltfi 
slmism. W,.<lnini.,l''f /;,!.. C.X.XVI. 45S. 
eudemonological (u-de'mon-6-loj'i-kal), a. 
Same as MMMMflime. Mi lid, XI. 137. 
2023 
eudemonology (u-de-inon-ol'o-ji), . [< (ir. 
fMu/iui', happy (see eudemon), + -tay/a,< /f;ni; 
speak : see -ology.] The science of human hap- 
piness. 
Eudendriidae (u-den-dri'i-de), n. pi. [NL., < 
Intuit iitlri i< HI + -iilir.] A family of Hydroiiolypi- 
nte which form colonies, all polyps of which may 
mature sexual products whereby they are often 
changed into polypostyles without mouth or 
tentacles. The alimentary zoolds possess one verticil 
of filiform tentacles, and mature the generative elemrnts 
on tentacular appendages. During the maturing of tin- 
sexual products toe sexual zooids often lieeome rtntiinen 
tary and lose their tentacles. Kiuleiidrium cochleatvm 
is a good example. Also EttdfiulruUv. 
Eudendrium (u-den'dri-um), n. [NL., < Gr. tv, 
well, + SevSpiov, dim. of ilvipav, a tree.] A 
genus of gymnoblastic bydrozoans, type of a 
1 : udenttrittnt cethleatunt, about natural size. 
family Eudendriidtf, the stock of which is stiff- 
ened by a horny, chitinous substance which is 
secreted by the animal as a covering, and ex- 
tends all over the colony excepting the zodids. 
One of the most common forms [of hydroids) found in 
shallow water . . . from Vineyard Sound northward is 
Eudendrittm dispar. It grows In colonies from two to 
nearly four inches in length, and the parU of the colony 
which correspond in appearance to the stems and branches 
of a plant are dark brown or black. At the tip of each 
branch and branchlet is a hydra-like animal or zooid, which 
is directly connected with every other one in the colony. 
Stand. Sat. llitt., I. 79. 
eudialyte (u-di'a-lit), n. [< Gr. tMttAvns, easy 
to break up or dissolve, < ev, well, + ct/aAtirof, 
dissolved, < diahveiv, dissolve : see dialysis.] A 
mineral of a brownish-red color, occurring in 
rhombohedral crystals, also massive, in Green- 
land. When powdered it dissolves readily in hydro- 
chloric acid, whence the name. It is a silicate of zirco- 
nium, Iron, manganese, calcium, .sodium, and other ele- 
menta. Kucolite is the same mineral from Norway. Also 
spelled, erroneously, eudyalite. 
eudiometer (u-di-om'e-ter), n. [< Gr. evtiof, 
calm, fine, clear, serene (of air, weather, sea, 
etc.) (< ev, well, + it-, seen in (Siof, heavenly, 
Zedf, orig. the sky, etc. : see deity), + ptrpov, 
a measure .] An instrument originally designed 
for ascertaining the purity of the air or the 
quantity of oxygen it contains, but now gener- 
ally employed in the analysis of gases, for the 
determination of the nature and proportion of 
the constituents of any gaseous mixture. One 
form consists of a graduated glass t n he. either straight or 
bent in the shape of the letter U, hermetically sealed at 
one end and open at the other. Two platinum wires, in. 
tended for the conveyance of electric sparks through any 
mixture of gases, so as to cause the union of certain of 
them, are inserted through the glass near the shut end of 
the tube, and closely approach but do not touch each 
other. The nature and proportions of the constituents of 
the gaseous mixture are determined by the diminution in 
volume after the passing of the spark. 
eudiometric, eudiometrical (u'di-o-met'rik, 
-ri-kal), a. Pertaining to a eudiometer or to 
eudiometry ; performed or ascertained by a eu- 
diometer: as, eudiometrical experiments or re- 
sults. 
eudiometry (u-di-om'e-tri), n. [As eudiometer 
H- -y.] The art or practice of ascertaining the 
purity of the air, or of determining the nature 
and proportions of the constituents of any gas- 
eous mixture, by means of the eudiometer. 
eudiplenral (u-di-plo'ral), a. [< Gr. ev, well, + 
(i/'f, two-, + vtevpa, side, + -/.] Bilaterally 
symmetrical; having lateral antimeres well 
marked ; exhibiting right and left sides of the 
body as symmetrically opposed and antimeri- 
cally disposed parts. 
'nfi-wlijilfiiral form, wlileh is generally known as that 
of bilateral symmetn . 
Gtyenbaur, Comp. Anat. (trans.), p. 128. 
Eudist (u'dist), w. [< F. Eudistr: see def.] 
One of a Roman Catholic congregation founded 
Euelephas 
in Knincc in Kil.'i by Jean Elides, a priest of 
the Oratory, for educational and missionary 
purposes. Its official name Is The Conyrrgation ofJtnu 
and Mary. The order was suppressed in ITitt, and revived 
Eudocimus (f-dot'i-mtu), . [NL., < Gr. ri>, 
well, + 66tuuor, <>slfi-iii<'il, notable, < Aaulv, 
think, seem.] 1. In ornith., a genus of ibises, 
containing such species as the white and scarlet 
ibises of America, E. alba and E. rvbra. H'ag- 
ler, 1832. 2. In rntom., a genus of Coleoptera. 
Srhniiherr, 1836. 
Eudozia (u-dok'si-a), . [NL., < Gr. tvfofoc, of 
good repute : see f!udoxian.] A spurious genus 
of hydrozoans, of the family Diphyidce; a group 
of individuals, consisting of a nutritive polyp 
with nematocysts, gonophores, and usually a 
hydroDhyllium, separated from any diphyid, as 
a species of Diphyes and of Aliyla. The term 
is retained as tne name of such objects. 
Eudozian (u-dok'si-an), a. and n. [< Gr. l.i - 
66$iof, a proper name) < evSofm;, of good repute, 
honored, famous, < tit, well, + <fdfo, opinion, 
reputation.] I. a. Of or pertaining to Eudox- 
ius or his doctrines. See II. 
II. n. A follower of Eudoxiug, a bishop of 
Constantinople and an extreme Arian of the 
fourth century: same as Anonutan, Aetian, and 
EunomiUH. 
Eudromias (u-dro'mi-as), n. [NL. (Brehm, 
1831), < Gr. tvipo/iiof, a good runner, < ev, well, 
+ -ipofios, running, < ipafitiv, run.] A genus 
of plovers, of the family Charadriidce, the type 
of which is the common dotterel, E. morinellug. 
There are several species, of different parts of 
the world. See cut under dotterel. 
eudyalite, . See eudialyte. 
Eudynamis(u-di'na-mis), n. [NL., also spelled 
Eudynamys (Vigors' and Horsfield, 1826) ; < Gr. 
ev, well, + ii'vaptf, power.] A genus of Indian, 
Australian, and Papuan cuckoos, of the family 
Cuculidce, containing such as E. honorata of In- 
dia, E. mindanenmg of the Philippines, and E. 
cyanoeepliala of Australia. 
Eildyptes (u-dip'tez), n. [NL. (Vieillot, 1816), 
< Gr. ev, well, -r ii'imic, a diver, < Siimiv, duck, 
< 6vetv, dive.] A genus of crested penguins, the 
Rock-hopper (Ktt<fy}ttichryio<omt). 
rock-hoppers, containing such species as the 
jackass-penguin or macaroni of the sealers, / . 
chrysocome or chrysolophus. 
Eudyptula (u-dip'tu-lft), . [NL., dim. of Eu- 
ditptrx.] A genus of Australian pygmy pen- 
guins, the type of which is E. minor, a bluish 
species with white throat and no collar, crest, 
or tracheal septum. Also Eudyptila. Sona- 
nartr, 1856. 
Euechinoidea (u-ek-i-noi'de-a), . pi. [NL., 
< Gr. f v, well, + fjipo? , the hectgehog, + -oidea.] 
The ordinary sea-urchins collectively, as dis- 
tinguished from the exclusively fossil ones, 
or Tessellata; the Echinoidea less the Palcechi- 
noidea. 
Euelephas (u-el'e-fas), . [NL. (Falconer), < 
Gr. ev, well, + i)j$a(, elephant.] A genus of 
proboscidean mammals, of which the Asiatic 
elephant, Elephas or Eiirltplmx iiidicux, is the 
type: distinguished from Lojmdon, the African 
elephant, by the extremely deep, narrow inter- 
vals, completely filled with cement, between 
the ridges of the molar teeth : same as Eleplias 
proper. See Loxodon and elephant. 
