sii 
stead: Pert. atrium ; appl, cavity, 
pore, canal, siphon, lobe s (zool.). 
Mm ; lOS, 
Connecting’ the atrium 
and the coelom; af#/. funnels, of 
uncertain * netion, in Cephalo- 
chorda (zo 
ee @ ‘rips nm. [L. atrium 
centra orUus, ‘channel 1] 
The o nin te from the atrial cavity 
to i exterior in Cephalochorda 
ol.). 
20 
atrioventricular (Atriévéntrik’ waa a. 
iL: —— pep eee ventriculus, 
small cavity.] the pecan, 
cealikar srcciane 2 fy heart ; appl. 
bundles, groove, openings (anat .). 
atrium - ian) #,. [i mt 
cham The two anterior cavi- 
ties eart; the tympanic 
cavity (anat.) ; a chamber surround 
in in icates and 
Cepha alochordates (zool.). 
atrochal (at’rékal) a. [Gk. a, with- 
out ; picker, when Without the 
pr reoral bat of cilia; appl. tro- 
chophore stage when the 5 
circlet is se ent and the ace 
a ees uniformly with cilia 
nice (at’ eto & [Gk. a, ome 
ephein, to nourish.}] Emac ation ; 
diminution se size and function of 
a part or organ (é7o/.). 
atropous (at'répiis) a. [Gk. @, with- 
out ; /vepetn, to turn Appi. ovule 
in proper position, 7. "é. not inverted 
(d 
atterminal (Attér’minal) a. [L. ad, 
to; ‘verminus, end.] wards a 
terminal; aff/. current directed 
toward the thermal cross-section 
YS). 
attraction (Atrik’shiin) # [ 
tractus, dra n 
oO it, as an attraction cone 
(ot). 
opened ede Fie § —— = 
ear.| Pert. the hearing appara 
ase Antes esc toe ossicle, a 
canal, meatus, nerve, tentacle, etc. 
Auerbach’s plexus,—a gangliated 
plexus of non- adaeset nerve- 
fibres, found between the two layers 
of the muscular coat of the small 
25 
AUT- 
intestine ; the plexus myentericus 
(phys. 
[L. augere, 
nerves rising 
augm entor (6gmén oe a. 
to saceeane’| “Abi 
rom the ss He Aes an 
ctin the heart, antago- 
istic relation to he waar ac- 
celerator (phys. 
aulostomatous (ore corns) a. [Gk. 
— tube ; so outh.] rhs 
tubular pag i poet (zool.). 
saa (6x1) a. [L. auris,ear.] Pert. 
ear or hearing, 
ouricts een Be LL. ee little 
The ral ear ; ear- 
ifke lobed appeiniie (zool, 1) the 
anterior chamber on each 
up 
side of tl of the or — 
canis érik’t 
it auricula, 
little eal An ae 
auricular (érik’ilar) = [L. auricula, 
small ear,] ert. an auricle ; ‘a 
artery, nerve, tubercle, vein (anat.). 
auricularia (6rik’ila’ria) m (L. 
re small ear.] A type ih nie 
among the Holithacans 
und 
auriculars,—. ~/u., ear coverts of 
birds. 
auriculate (6rik’alat) a. 
capa ear. are 
id 
; appl. leaf with lobes separa’ 
eter rest oO binds, hastate- coated 
=e) 
[L. auricula, 
uriculo- ventricular (érik’ilé-vén- 
anni’ lar) a. sEete , or connecting the 
auricle and ventricle of the heart ; 
appl. bande. os 
aurophore (ér‘éfor) 7. 
Gk. pherein, to ages An o 
projecting from the base of pneu- 
7 hore of ator Siphonophores 
‘inaaead c pat Bi [Gk. — 
self. 
om a ait chalone 
autoblast Pid Oblast) #. 
A 105, eh 
se ioss 
onuaiaene sis (6t’ Skatal'ists) nm, [Gk. 
Gk. autos, 
ss inde- 
secretion of i 
autochthon (Oak the) a Wek. autos, 
