The following drawing is about A0 size.

A summary diagram of the midbrain showing the relationships that representative neurones from Figures 3, 4, 5, 6, 7 and 8 have to each other and with gross features of the midbrain.

Key:
ch. chiasma of corpora cardiaca nerve root 1
The bundles which are coloured coded in green represent the protocerebral bridge-ellipsoid body segments of member-bundels of central complex fibre system I.
A drawing based on a reconstruction from a Wigglesworth preparation. Anterior view. The positions of fifteen pairs of cell-bodies and one single cell-body are shown. The smalles subdivisions on the reference scale represent twelve sections, each 7µm in thickness (i.e. 84µm in total).
inset a longitudinal view of the midbrain showing the three subgroups of the intercerebralis.

Key:
O1 Median ocellar neurones cell-body (single)
O2, O3 Lateral ocellar neurone cell-bodies
G1 Giant neurone cell-bodies
L1, L2, L3 Lateral neurone cell-bodies
V1, V2, V3 Ventral neurone cell-bodies
PI(2) Pars intercerebralis (middle) neurone cell-bodies
anterior
middle
posterior