HIL- 
was attached to the placenta ; the 
ye a seed; the nu cleus of a 
starch grain (40+). 
hilus iad nN. ‘ae hilum, trifle.) 
ra ae tn or opening; a 
saat ning or depression 
usually se the blood-vessels, 
etc., ore (anat., zool.). 
hind n,—the *hombencephalon, 
that te: of the brain derived 
from the third embryonic vesicle 
(anat.). 
hind gut,—a macirebot of the yolk- 
tail-fold in 
e e posterior 
portion of the ainnentars trac 
sce 
in ~~ direction only (a 
tough ‘elastic 
qabetaace joi ning the two valves 
of a bivalve shell (zoo/.). 
hinge line,—the line of articulation 
of oh) two valves in a bivalve shell 
(zool.). 
hinge tooth, —one of the projections 
—* on the hinge line in bivalves 
nip Joint, —the ball-and-socket joint 
between femur and_hip-girdle 
jru’din) #. rudo, 
le A substance obtained in 
solution from the head of leeches 
= renders n blood non- 
gulable ; an anticoagulin (p/ys.) 
hispid (hispid) @. [L. Asspidus, 
ough.] Hav Sige? a hairs, spines, 
ve es ope Pa 
histoblast (h tablast) 71. — histos, 
tissue ; blasts bud.] One of the 
133 
HIS. 
units of any tissue (amaz.) ; imaginal 
discs (zool.). 
histochemistry (his’tékém‘istri) 7. 
[Gk. viet tissue ; chemos, juice.] 
ry of animal tissues 
(i0l.). 
histocyte (his'tésit) 7. bay pest 
tissue; Ay/os, hollow. 
cell as distinguished "Bin a pe 
oe £00 
histogenesis (his’téjén’ésis) 7. [Gk. 
histos, tissue; gignesthai, to pro- 
uce. ormation and lop- 
ent of tissue (4zo/.). 
histogenie (his’‘téjén'ik) a. [Gk 
histos, tissue; gignest to pro- 
uce.} ‘Tissue-producin app 
the separate merismatic layers in 
a stratified rontgrad point (402.) ; 
tissue-producing (zoo/. 
mk hist atin» (his’thé Seenes 8 n. 
k 
a great affinity for oxygen, an 
to be respiratory 
(phy 
niscutony ota n. (Gk. Aistos, 
tissue ; Jogos. discourse.] The 
science which treats of he minute 
structure of tissues (470. 
histolysis (histdl’isis) 7. {Sk histos, 
tissue ; Zyein, to dissolve.] The 
dissolution organic tissues 
bi that proc by which 
pupal foternal organs 
into a cream uid, 
except certain cells round which 
new imaginal tissues are 
d (zool.). 
histone (his’ton) #. ([Gk. Aiés/os, 
€ 
rl rom nucleo-histone (pAys. 
histophyly rengets li [Gk. Azstos, 
tissue ; phyle, ibe.] The phylo- 
cells 
histot: opie ee ee a. [Gk. 
histos, — m, to nourish. ] 
Pert. with tissue 
format n (Phys: 
naar (his t6z0'tk) a. 
sl 
=3 
[Gk. Ais/os, 
al iving 
ge 
istozym 
tissue ; syme, leav ven.] An 
found in the kidneys of certain 
