302 
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ee en aac. 
cr 
ER] OF 
ak) 
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Yes 
Fig. 11. Brain and optic ganglion. Section 10 
of series K. Magnification same as figures 2—10. 
Series cut parallel with the dorsal surface, but some- 
what obliquely, so that the left half. of the section 
is lower. Reduced '/,. 
Fig. 12, 13, 14, 15, 16, 17. Brain. Sections 
11, 12, 13, 14, 15, 16 of series K. Magnification 
same as figures 2—10. Reduced !/,. 
Fig.18. Optic ganglion. Section 14 of series K, 
Magnification same as figures 2—10. Reduced ?/,. 
ToS are 
— En m 
