Pia. 52: 
Prg.os. 
Fig. 54. 
HiG; 00: 
Three cells of the digestive tube, to show the striations in the basal 
portion. Compare with Figure 9 (Plate 1). x 830. 
From an oblique frontal section of the eye seen from dorsal side, 
showing that nerves leave the inner ends of the cells to make up: 
the optic nerve. X 830. 
A cross section through the anterior part of the brain, to show the 
28 fibres of the optic nerve within the brain. There is a mem- 
brane on the dorsal and one on the ventral surface of the brain; 
the latter separates the brain from the hypodermis. X 830. 
The next section to Figure 51. The basal plate and a row of in- 
terior bodies are shown. ‘Two fibres leave the cell from a point. 
on the periphery opposite to the basal plate. X 830. 
