series, upper jaw, of the Capybara {Hy-
drochcerus Capibara). Cuvier, Oss. Foss.
Fig. 18. Right ramus of the lower jaw,
with the incisor and the two molars,
magnified, of the Australian Water-rat
(Hydromys floviv enter). F. Cuvier.
PLATE 106.
View of a section of the incisor of a Beaver
(Castor fiber), under a magnifying power
of 250 linear dimensions, reduced to one
third the size as so viewed: d d, the
dentine forming the convex side of the
incisor; d', the dentine forming the concave
side; v v, vascular canals of the
central tract of vaso-dentine ; e, inner
layer of enamel; e', outer and denser
layer of enamel; c, thin outer layer of
coloured cement. Original.
PLATE 107.
The magnified sections of teeth in this, and
the two following plates, are figured as
seen on a dark ground, by reflected light.
Fig. 1. Transverse section of a molar
of a Squirrel (Sciurus vulgaris). Fig. 2.
Ditto of a Beaver (Castor fiber) : d, dentine;
e, enamel; c, cement. Erdl.*
PLATE 108.
Fig. 1.—Transverse section of the molar of
a Rat (Mus decumanus). Fig. 2. Vertical
section of the molar of a Flying
Squirrel (Pteromys volucella) : d, dentine;
e, enamel; c, cement. Fig. 3. Transverse
section of the molar of a Water-Vole
(Arvicola amphibia) : d, dentine; e, enamel
; c, cement; o, osteo-dentine. Erdl.
PLATE 109.
Fig. 1.—Transverse section of the molar
of a Hare : d, dentine; e, enamel. Fig. 2.
* Abhaudlungen der K. Bayerischen Akademie *, Bd. iii.
1841.
A small portion of the dentine of a
Beaver’s tooth, magnified more highly to
show the secondary undulations of the
dentinal tubes. Fig. 3. A small portion
of the dentine of a Calf’s molar more
highly magnified, showing the terminal
loops and branches of the dentinal tubes.
Fig. 4. A small portion of the cement
of the same tooth similarly magnified,
showing the cemental tubes and cells.
Erdl.
PLATE 110.
Fig. 1.—Teeth of the Cape-Mole (Chryso-
chloris aurea). Fig. 2. Teeth of the
Virginian Shrew-Mole (Scalops aquations).
Fig. 3. Teeth detached, and jaws showing
the sockets, of the Common-Mole (Talpa
cur op tea) : i, incisors ; c, canines ; p,
premolars; m, molars. Fig. 4. Teeth
detached, and jaws showing the sockets
of a Shrew (Sorex tetragonurus. Duver-
noy.). Fig. 5. Teeth detached, and
jaws showing the sockets of the Hedgehog
(Erinaceus europteus). Fig. 6. Teeth
detached, and jaws showing the sockets
of the Tenrec (Centetes ecaudatus). From
De Blainville.
PLATE 111.
Fig. 1.—Teeth and different views of the
incisors of the Solenodon paradoxus.
Brandt: a, front view of upper incisors;
w, back view of an upper incisor; b,
front view of lower incisors ; c, inside
view of one lower incisor, showing the
deep groove. Fig. 2. Base of cranium,
magnified, of the common Shrew (Sorex
araneus), showing the crowns of i, the
single incisor; p, the premolars; m, the
true molars. Fig. 3. Upper jaw showing
the crowns of the teeth of the Tupaia
(Glisorex tana). Fig. 4. Upper jaw
showing the crowns of the teeth of the
Gymnura Rafflesii : 4a, cranium and side
: view of the teeth ; 4b, lower jaw and side
view of the teeth of the same Insectivore.
Fig. 5. Upper jaw, showing the crowns
of the teeth of the Hedge-hog (Erinaceus
! europæus). Fig. 6. Upper jaw, showing
the crowns of the teeth of the Cape-
Hedgehog (Ericulus spinosus). De Blain-
| ville.
PLATE 112.
Fig. I.—Outline of skull, and left upper
p teeth of the Common-Bat ( Vespertilio
P murinus). Fig. I -. Outline of lower jaw,
[ and left lower teeth of the Common-
; Bat. Fig. 1". Outline of skull and
I lower jaw of a very young Bat, with the
I deciduous teeth : i i, upper and lower
‘ permanent incisors ; ï i, upper and lower
I deciduous incisors ; c c, upper and lower
permanent canines ; c , upper and lower
Î deciduous canines ; p p, upper and lower
! permanent premolars ; p' p-, upper and
j lower deciduous molars ; m m. permanent
I true molars. Fig. 2 2\ Upper and lower
I teeth of the Noctule ( Vespertilio noctula).
£ Fig. 2". Front view of upper incisors
I' and canines of ditto. Fig. 3. Upper and
I lower teeth of the Serotine ( Vespertilio
I serotinus). Fig. 4. Upper and lower teeth
• of the Glossophaga. Fig. 5. Upper and
I lower teeth of the Horse-shoe Bat (Rhino-
I lophus ferrum-equinum). Fig. 6 and 6’.
|; Upper and lower teeth of Nycteris,
j 6". Front view of the incisors and
; canines of ditto. Fig. 7. Side view of
I. the teeth of ditto. Fig. 8. Side view of
the teeth of Phyllostoma hastatum. Fig.
£ 9. Side view of the teeth of the Vampire-
[ Bat (Desmodus spectrum). Fig. 10.
’ Upper and lower teeth of a Frugivorous
Bat (Pteropus). Fig. 10". The same
teeth detached. Rousseau and De Blainville.
PLATE 113.
Fig. 1.—A reduced figure of a magnified
view of a longitudinal section of the
molar tooth of Pteropus edulis: d" d‘,
dentinal cells.* nat. size. Fin. 2 \ A
small portion of dentine and enamel,
magnified 400 linear diameters, showing
d, the dichotomous branches of the
dentinal tubes ; e, the enamel. Original.
PLATE 113a.
Fig. 1.—A reduced figure of a magnified
view of a transverse section of the canine
tooth of the Pteropus edulis : d, the dentinal
cells. Fig. 2. A small portion of
the peripheral part of the dentine of the
same tooth, showing the dichotomous
divisions and small lateral branches of
the dentinal tubes, and the peripheral
contour of d" d~, the dentinal cells. Original.
PLATE 114.
Fig. 1.—Upper teeth of the Common Colu-
go (Galeopithecus Temminckii). Fig. la.
Lower teeth of the same. Fig. lb. Upper
and lower deciduous and permanent teeth
of the same ; in each figure i, is incisors ;
c, canine ; p, premolars; m, molars.
Fig. 2. Teeth of the Cheiromys Madagas-
cariensis. Fig. 3. Teeth of the Malmag
(Tarsius spectrum). Fig. 4. Teeth of the
Slow-Lemur (Stenops tardigradus). Fig.
5. Teeth detached of the Maki-Lemur
(Lemur macauco). Fig. 6. Teeth of the
Woolly Indri (Lichanotus laniger). Fig.
7. Teeth of the Galago (Qtolicnus mada-
gascariensis). Fig. 8. Teeth of the Marmoset
(Hapale jacchus), magnified. Fig. 9.