Appendicularia 
arc fcmml in all latitudes, ami are propelled, like tadpole:*, 
liy tin- flapping of it loin; caudal appendage. 
Hiirlrii. Anat. Inn-rt.. ]>. sin. 
Appendiculariajlabellum, magnified. 
I, the entire animal, with the caudal appendage forward in its 
natural position ; II, side view of body, the appendage forcibly bent 
backward : -/, body ; />', appendage ; a, mouth ; b, pharynx ; c, an 
atrial opening ; ci, the corresponding stigma with its cilia ; f, anus ; 
f, rectum ; g, esophagus ; h, i, stomach ; *, testis ; /, urochord ; m, 
cellular patch at side of oral end of body ; n, endostyle ; /, ganglion ; 
q, ciliated sac ; r, otocyst ; j, posterior nerve, with r, its ganglia ; en, 
endoderm ; fc, ectoderm. 
Appendiculariae (ap-en-dik-u-la'ri-e), n. pi. 
Same as AppmdievwrUekB. 
appendicularian (ap-en-dik-u-la'ri-an), n. [< 
Appendicularia + -an.] An animal of the genus 
Appendicularia ; one of the Appendiculariidai. 
appendiculariid (ap-en-dik-u-la'ri-id), . A 
tunicate, or ascidian, of the family Appendicu- 
lariida'. 
Appendiculariidae (ap-en-dik / 'u-la-ri'i-de), . 
pi. [Nit., < Appendicularia + -MO.] Afamily of 
tunicates, or ascidians, of a low grade of organi- 
zation, permanently retaining a form and struc- 
ture which characterize only the embryonic or 
larval stage of other ascidians. They are named 
from their tadpole-like shape and long tail or appendage, 
by the vibration of which they move about. The family 
corresponds to a suborder Copelata of some naturalists, as 
distinguished from Acopa. 
Appendiculata (ap-en-dik-u-la'ta), M. pi. 
[NL., neut. pi. of appenilicttlatus : see appendic- 
ulatc.] A name given by E. R. Lankester to 
a phylum or prime group of the animal king- 
dom, including those forms which have lateral 
locomotive appendages and usually a segment- 
ed body. It is a loose and inexact synonym of 
Arthropoda, together with Botifera and Chceto- 
poda. See Arthropoda. 
appendiculate (ap-en-dik'u-lat), a. [< NL. ap- 
pctuliculatiis, < L. appcndiciila '<: see appcndicle.] 
1. Provided with appendages; having the 
character of an appendage or appendages ; form- 
ing an appendicle. Used especially in botany, being 
applied, for instance, to leaves, or to organs appended 
to leaves, leaf-stalks, etc. : thus, the pitcher-like appen- 
dage of the leaf of the Nepenthes dwtulatoria, or pitcher- 
plant, is said to be appendiculate. See cuts under ap- 
peiiitarje. and nsrit/juw. 
2. Pertaining to or having the characters of 
the Appendiculata. 
Appendirostres (a-pen-di-ros'trez), n. pi. 
[NL., contr. for "appendicirostres,^ L. appendix, 
appendix, + rostrum, a beak.] In Blytn's sys- 
tem of classification (1849), a group of birds, 
the hornbills, Bucerotida:, as distinguished from 
the Arculirostrcs, the hoopoes or Upupida.'. 
appendix (a-pen'diks), .; pi. appendixes or 
appendices "(-dik-ses or -di-sez). [< L. ap- 
pendix, rarely ampendii, an appendage, appen- 
dix, addition, < appendere, hang: see append.'] 
1. Something appended or added ; an adjunct, 
concomitant, appendage, or accessory. 
Normandy became an appendix to England. 
Sir M. Hale, Hist. Common Law of Eng. 
Specifically 2. An addition appended to a 
document or book relating to the main work, 
usually consisting of explanatory or statistical 
matter adding to its value, but not essential to 
its completeness, and thus differing from a 
supplement, which properly is intended to sup- 
ply deficiencies and correct inaccuracies. 3. 
[As a Latin word ; pi. appendices.] In anat., 
a process, prolongation, or projection. See the 
phrases following Appendices eplplolcse (appen- 
dages of the epiploon), small folds of peritoneum cov- 
ering the large intestine and containing fat. Appendix 
auriculae, the appendage of the auricle of the heart, an 
ear-like projection, from which, in human anatomy, the 
auricle itself derives its name. Appendix CfflCl, in anat., 
the vermiform appendix. Appendix enslformiS, the 
ensiform appendage of the breast-bone ; the xiphoid car- 
tilage or appendix. See cut under skeleton. Appen- 
dix vermlformls, or vermiform appendix, a blind 
272 
process given off from the nccum, varying in man from 
3 to (i inches in len-th. See cut innl< T //('<*'///. Ap- 
pendix VeSiCffi (appeiidair uf the Madder), a hernia "f 
tin.- nun-mis membrane "f tile bladder fchrOUffb the muscu- 
lar mat. -Syn. 2. .!/'/"'"'''> X"/'/'' 1 '""'"'- Boefuffpfnntiit. 
appendixious (ap-en-dik'shus), . (X appendix 
+ -i-iHi*. (.'f. ML. appi'ndirhi.t, supplementary.] 
Pertaining to or of the nature of an appendix ; 
appendicatory. Hriitliaiii. [Rare.] 
appense (a-pens'), a. [< L. appenmts, pp. of 
it]i}}< -mil n- : sec np/M'iid.] Hanging from above; 
specifically, in hot., pendulous : applied to 
ovules attached to the sides or angles of the 
ovary, and drooping. [Rare.] 
appenset (a-pens'), v. t. [< OF. appetiser, ap- 
pend (a seal), < L. as if "appensare, freq. of 
appendere, pp. appensus, append: see append.'] 
To append (a seal). 
We haue caused . . . our seale thereunto to be ap- 
ftntti. Ilnkluyt'i Voyages, II. 158. (A T . E. D.) 
appentt, i>. i. An old form of append. 
appentice (a-pen'tis), n. [< ME. *apentice (by 
apheresis pentis, pentice, whence, by corruption, 
penthouse, q. v.), < OF. apentis, F. appetis,( ML. 
appendiciiiiii, appcnditium, appentice, < LL. ap- 
pendicium, an appendage, < appendere, append : 
see append, appendix.] In arch., any lean-to 
Appentice. 
Chapter-house of the Cathedral of Meaux, France. 
roof ; especially, a kind of open shed of a sin- 
gle slope supported on posts or columns, or on 
brackets let into a wall, or otherwise, to afford 
protection from the weather to a door, window, 
flight of steps, etc., over which it projects or 
forms a hood. 
apperceive (ap-er-seV), v. t.; pret. and pp. 
apperceived, ppr. apperceiring. [Early mod. 
E. also apperceave, apparceice, < ME. apercei- 
ven, aparceiven, aparceven, < OF. apercereir, 
aperceroir, aparcevoir, F. opercecoir = Sp. apcr- 
cibir = Pg. aperceber, < LL. "appercipere, < L. ad, 
to, + percipere, perceive : see perceire.] To be 
conscious of perceiving; comprehend (what is 
perceived); loosely, to perceive; notice: used 
specifically of internal perception or self-con- 
sciousness. See apperception. 
apperceivingt (ap-er-se'ving), n. [ME. aper- 
ceyrynge; verbal n. of apperceive.] Percep- 
tion. Chaucer. 
apperception (ap-er-sep'shqn), . [< NL. 
apperceptio(n-) (Leibnitz), < LL. "appercipere, 
pp.'apperceptus: see apperceive and perception.] 
1 . That act of the mind by which it becomes 
conscious of its ideas as its own; perception 
(which see) with the added consciousness that 
it is " I " who perceive. 
It is well to make a distinction between perception, 
which is the inner state of the monad, representing exter- 
nal things, and apperception, which is consciousness, or 
the reflexive knowledge of this interior state, which is not 
given to all souls, nor always to the same soul. 
Leibnitz, Nature and Grace, tr. by N. Porter, 4. 
The Leibnitzo-Wolfflans distinguished three acts in the 
process of representative cognition : (1) The act of repre- 
senting a (mediate) object to the mind ; (2) the representa- 
tion, or, to speak more properly, representamen, itself as 
an (immediate or vicarious) object exhibited to the mind ; 
(3) the act by which the mind is conscious immediately of 
the representative object, and through it mediately of 
the remote object represented. They called the first per- 
ception ; the last, apperception ; the second, idea. 
Sir W. Hamilton, Reid, p. 877, note. 
Hence, by a slight modification 2. With Kant 
and most English writers, an act of voluntary 
consciousness, accompanied with self-con- 
sciousness: especially in the phrase pure ap- 
perception. 
My theory, like Kant's, lays apperception, anglice re- 
flection, at the basis of philosophy. 
Hodgson, Phil, of Reflection, I. 224. 
3. In the psychology of Herbart (1776-1841), 
the coalescence of the remainder of a new 
isolated idea with an older one, by a modifica- 
tion of one or the other. 4. Apprehension; 
recognition. 
appetence 
The recognition or u/., r,'f/,>inn of these truths hymen. 
Jtauriri: (.V. E. D.) 
Active apperception, s, , atOm. Pure appercep- 
tion, in tlit- J\<nitiiiti /<////">., tin: liarc consciousness of 
st-lf. the ini-i-i- "I" or "I tliink." S.-i- *rlj'-,-<,,i*r;<,ii*neu. 
Unity of apperception, that unity ,,t ,-,ms, -i.msnun 
by virtue of which its contents (perceptlooa, thoughts, 
it..) coexist for it; the pure self or "1" to which the 
enntenU of "lit- ainl tin- same mini) must be referred. 
apperceptive (ap-er-sep'tiv), a. [< app< -m/i- 
tion, after /irriv/>tin:] Pertaining or relating 
to, or of the nature of, apperception. 
It is after all nothing but our apperceptive faculties, 
potentially idealized, that are made to serve for the emi- 
aciousness of a universal subject. Mind, IX. 381. 
Apperceptive union, the uniting of one idea with an- 
other by a voluntary act of consciousness. 
apperilt (a-per'il), . [< ap- 1 + peril.] Peril; 
danger; risk. 
Let me stay at thine apperil. , Shak., 1. of A., i. 2. 
Is there no law for a woman that will ran upon a man 
at her own apperil? Middleton, Michaelmas Term, i. 1. 
appersi-andt (ap'er-si-and'), . Same as am- 
persand. 
A shrivelled cadaverous piece of deformity in the shape 
of an izzard or an apj^ergiand. 
MaMin, Man of the World, iii. 1. 
appertain (ap-er-tan'), f. i. [Early mod. E. 
also appertain; apertain, < ME. apperteinen, 
aperteiiif/i, n/ifrteiien, < OF. apartenir, F. appar- 
tenir, < LL. a/iperliiiere, belong to, < L. ad, to, 
+ pertinere, belong, pertain : see pertain.] To 
belong or pertain, as a part (to the whole), a 
member (to a class), a possession, or an attri- 
bute ; belong by association or normal relation. 
Hang mournful epitaphs, and do all rites 
That appertain unto a burial. 
Shale., Much Ado, iv. 1. 
The Father, to whom in heaven supreme 
Kingdom, and power, and glory appertains. 
MUton, P. L., vi. 815. 
In giving him In another, it [love] still more gives him 
to himself. . . . He does not longer appertain to his fam- 
ily and society ; he is somewhat ; he is a person. 
Kmernan, Essays, 1st ser., p. 161. 
I am much inclined to suspect that the fossil upon which 
the genus Ornithopterus has been founded appertain* to 
a true Bird. Huxley, Anat. Vert., p. 232. 
= Syn. See pertain. 
appertainance (ap-er-ta'nans), n. [< appertain 
-\- -ance. Cf.appertenanceandappurtcnance.] 1. 
The quality or state of appertaining. [Rare.] 
The noblest elevations of the human mind have in n/>- 
pertainance their sands and swamps. 
Landor, Imaginary Conversations. (N. E. D.) 
2. A thing which appertains ; an appurtenance, 
appertainment ( ap-er-tan 'ment), . [< apper- 
tain + -ment.] That which appertains or be- 
longs ; an appurtenance ; an external or adven- 
titious attribute. [Rare.] 
We lay by 
Our aitprrtainments. Shale., T. and ('., ii. 3. 
appertenancet, appertenencet, apperti- 
nencet, Old forms of appurtenance. 
appertinentt (a-per'ti-nent), a. and n. [Same 
as appurtenant, after the "L. appertinen(t-)s : see 
appurtenant.] I. . Belonging; properly relat- 
ing; appurtenant. 
All the other gifts appertinent to man. 
ShaJc., 2 Hen. IV., i. 2. 
II. n. That which appropriately belongs to 
something else ; an appurtenance. 
You know how apt our love was, to accord 
To furnish him with all appertinents 
Belonging to his honour. Shalt., Hen. V., ii. 2. 
appetet, r. t. [ME. appeten, < OF. appeter, < 
L. appetere, adpctere, strive after, try to get, < 
ad, to, + petere, seek, aim at: see petition.] 
To crave or long for; covet; desire. Chaucer. 
appetence, appetency (ap'e-tens, -ten-si), n. 
[= F. appetence, < L. appetentia, < appeten(t-)s, 
adpeten(t-)s : see appetent.] 1. The act of seek- 
ing or craving after that which satisfies the 
affections, passions, or tastes ; desire ; inclina- 
tion; propensity. 
I know not to what else we can better liken the strong 
appetence of the mind for improvement, than to a hunger 
and thirst after knowledge and truth. 
Everett, Orations, II. 277. 
They had a strong appetency for reading. Merivale. 
Specifically 2. Strong natural craving for 
that which gratifies the senses ; appetite ; ani- 
mal desire: as, "lustful appetence," Milton, P. 
L., xi. 619. 
The innate aversion to any poison known to modern 
chemistry can, by persistent disregard, be turned into a 
morbid appetency, vehement and persistent in proportion 
to the virulence of the poison. 
Pop. Sci. Mo., XXVIII. 518. 
3. A mental tendency toward an end; a voli- 
tion or desire. 
I shall occasionally employ the term appetency in the 
rigorous signification, as a genus comprehending under it 
both desires and volitions. Sir W, Hamilton. 
