JOURNAL OF MICROSCOPICAL SCIENCE. 
EXPLANATION OF PLATE XXIX, 
Illustrating Professor Pouchet’s Memoir On the Laminar 
Tissue of Amphioxus.’^ 
Fig. 1. — Laminar network of the lophioderm. 
Fig. 3. — Lophioderm from the region of the extremity of the notochord, 
a, cellular rods ; c, <?, walls of the circular cavities with their cellular 
covering ; Ci sheath of the notochord ; d, the largest cavity forming the 
transition to the cavities of the fin. 
Fig. 3. — a. Section of a canal in the subdermic layer, a, dermis ; 
fibres. B. Pyriform cavity communicating with a cellular filament. 
Fig. 4. — Transverse optical section of a papilla and its lumen. sub- 
cutaneous aponeurosis ; space filled with liquid surrounding the papilla, 
and completely lined with epithelium ; plan of the delicate fibres which 
send prolongations into the papilla ; c?, e, amorphous substance covering 
each side of the median aponeurosis (^), and bounding on the other hand 
the blood (?) spaces, which are lined with cells ; /, amorphous substance 
in connection with the muscles {mm), and traversed by very large laminar 
fibres {g). 
Fig. 3. — Longitudinal section passing through the median aponeurosis 
(A), on which are seen the nuclei of the cells, which cover the spaces shown 
in the preceding figure. The substance of the papilla presents concentric 
layers, which are clearly visible. The letters are the same as in the pre- 
ceding figure. 
Fig. 6. — Posterior extremity of the notochord, with the extremity of the 
central canal of the medulla, on which arc inserted portions of the laminar 
network. In the tissue of the notochord are seen very small nuclei, whicli 
are very abundant and scattered throughout its whole thickness. 
Fig. 7. — Sensory nerve terminations of the Trigeminus, a, simple termi- 
nation with three cells, furnished with an envelope having itself a nucleus ; 
h, compound terminations. 
