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Ant.D. Anterior diverticulum.

A.L. Anterior lobe.

Aq.C. Aqueductus cerebri.

B. V. Blood vessel.

C'. Constriction between “pineal sac” and “pineal eye”.

Ca. Capsule.

Cap. Capillary.

Cav. Cavity.

Cbl. Cerebellum.

C.C. Corpus callosum.

C'.E., C.Ep. Columuar epithelium.

C.H. Cerebral hemisphere.

Ch.P. Chorioid plexus.

C'h.P.V. III Chorioid plexus of third ventricle.

C'h.P.L. V. Chorioid plexus of lateral ventricle.

C.M. Corpus mammillaris.

C.N. III Cranial nerve III.

C.N. IV Cranial nerve IV.

0.N. V Cranial nerve V.

Cp. Capillary.

C.T. Connective tissue.

C.T.C’. Connective tissue cells.

Cr.C'. Cranial capsule.

Cyst. Cyst containing chorioidal villi.

C. V. Chorioidal villi.

D.D., D.D.’, D.D.” Dorsal diverticulum and its subdivisions.

D.S. Dorsal sac.

D.M. Dura mater.

E.L.M. External limiting membrane.

End.S. Endothelial space.

Ep. Ependyma.

Ep.D. Ependymal diverticulum (dorsal sac).

Epd. Epidermis.

Ep.Z. Ependymal zone.

Ep.C. Epithelial column.

Iv'.(.'. Vessels in fibrous capsule.

F .F’. F ornix.

G.C. V. Great cerebral vein (Galen).

G'li., G.S'l2. Glial sheath.

Gl.St. Glial stratum (pseudo-epithelium).

H.G. Habenular ganglion.

I.S.S. Inferior sagittal sinus.

I.L.S. Interlobar septum.

I.Lr.S. Interlobular septum.

Inf. Infundibulum.

I.P.R. Infrapineal recess.

L. Lobule.

Le. Lens.

L.N.F.I’.S. Layer of nerve fibres of pineal sac.

L.N.F.R. Layer of nerve fibres of retina.

Lmn. Lumen.

M.B. Meynert’s bundle.

M.Z. Marginal zone.

N.Z. Nuclear zone.

0p.P.St. Opening of pineal stalk.

0.T. Optic thalamus.

P. Pulvinar.

Pa. ? Paraphysis.

'Pa.C. Parenchyma cell.

Pa.0. Parietal organ (pineal eye).

Par. Parenchyma.

P.B. Pineal Body.

P.O. Pineal cells.

P.Co., P.C'., P.0.1, P.C.3 Posterior commissure.

P.Cyst. Pineal cyst.

P.D. Pineal diverticulum.

P.E. Pineal eye (parietal organ).

P.I.P. Posterior-intercalary plate.

P.L. Posterior lobe.

P.M., P.M.1, P.M.’ Pia mater.

P.M.D. Posterior median diverticulum. P.0. Pineal organ.

Post.D. Posterior diverticulum.

P.P.0. Peduncle of pineal organ.

P.R. Pineal recess.

Pr. Ep. Epithelial process.

P.S. Pineal sac.

P.Sh. Pial sheath.

P.St. Pineal stalk.

P. V. Pons Varolii.

P. V.A . Post-velar arch.

Pv.Sp. Perivascular space.

Q.P. Quadrigeminal plate.

R. Retina.

Ros. “ Rosettes ” .

R.P. Rathke’s pouch.

S. Septum interhemisphericum.

S.C’. Superior commissure (habenular commissure).

S.C'.0. Subcommissural organ.

S.Co. Sinus confluens.

S.0ol. Superior colliculus.

S.D. Secondary diverticulum.

S.E. condaly evagination.

S.D.N. Small darkly stained nucleus. Sp. Space.

S.P.L. Splenium.

S.T. Sinus transversus.

SLO. Stieda’s organ (terminal vesicle).

Sub.ep. Subependymal layer.

T. Tongue.

T.Cbl. Tentorium cerebelli.

Th. Thalamus.

Tag. Tegmentum.

Thr. Thrombus.

V.O'.M. Great cerebral vein (V.M. Galeni).

V.C.T. Vascular connective tissue.

V.F. Velar fold. V.M. Ventriculus mesencephalicus.

V.L. Ventriculus lateralis.

V. III Third ventricle.

V. IV Fourth ventricle.

V.S. Venous sinuses.