J. BOEKE. On the structure of the light percepting cells in the spinal 
cord, on the neurofibrillae in the ganglioncells and on the innervation 
of the striped muscles in amphioxus lanceolatus. 
Fig. 1. 
Pigment-cup and eye-cel 
with vitreous bodies. 
Fig. 3. 
Pigment-cup and eye-cell with 
Fig. 2 network of neurofibrillae. 
Pigment-cup and eye-cell with Enlarg : 1200, 
the network of neurofibrillae 
Enlarg : 800. 
ee ee ESS SSS 
Fig. 4 
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} X AST iva Sener 
he 2 tr En . _ 
7 ij / ANN De | 
fos is if ) sj) K = + 
| ; \ j i 
oP Cy 4 be 3. cross section through 
< | \ 
| | Jd Ve. BA = Ted the muscle-plates. 
ZEND JL nl | kaan 2 
en 
Belden ms 
en EE | 
f 
Sey x 
\ / a 
Woe 
My 
Vi Fig. 6, 
UY A. longitudinal 
4 e 
aS section. 
Fig. 5. Arrangement of the neurofibrillae in a 
section through a ganglioncell from the dorsal part 
of the medulla. Fibrillae drawn with the 
drawing apparatus in different optical sections. 
Proceedings Royal Acad. Amsterdam. Vol. Y: 
