| 1
.
| Inferior surface of fornix (fornix reflected upward) |
| 2
.
| Caudate nucleus (forming sloping floor of anterior horn of lateral ventricle) |
| 3
.
| Fornix column (divided) |
| 4
.
| Thickened part of septum pellucidum continuous into subcallosal gyrus |
| 5
.
| Internal cerebral vein |
| 6
.
| Stria terminalis |
| 7
.
| Choroid plexus continuing through interventricular foramen from roof of third ventricle to body of lateral ventricle |
| 8
.
| Position of interventricular foramen (of Monro) |
| 9
.
| Subcallosal gyrus |
| 10
.
| Anterior commissure (cut across) |
| 11
.
| Fornix (column) approaching mammillary body |
| 12
.
| Lamina terminalis |
| 13
.
| Posterior parolfactory sulcus |
| 14
.
| Optic recess and optic chiasm |
| 15
.
| Parolfactory area |
| 16
.
| Anterior tubercle of thalamus |
| 17
.
| Choroidal branch of posterior cerebral artery |
| 18
.
| Stria medullaris thalami |
| 19
.
| Massa intermedia (cut through) |
| 20
.
| Mamillothalamic tract |
| 21
.
| Periventricular fibers |
| 22
.
| Medial central branch of posterior cerebral artery |
| 23
.
| Fasciculus retroflexus |
| 24
.
| Floor of third ventricle and mamillary body |
