Physiology and histology of the CubomedusAE / including Dr. F.S. Conant's notes on the physiology

REFERENCE LETTERS.

a	=	flagellum in Fig. 27, that is supposed to extend centrad beyond the nucleus.
b	=	twin flagella in Fig. 27, of which the centrad continuation is seen applied against the distal surface of the cells and to be continued centrad.
c	=	capsule of lens.
cf	=	axial fibers of cells extending centrad.
co	=	cornea.
concr	=	concretion cavity.
ec	=	ectoderm.
en	=	endoderm.
f	=	flagella.
flp	=	distal fiber of a long pigment cell.
fpr	=	axial nerve fiber of a prism cell.
fpyr	=	axial nerve fiber of a pyramid cell.
frc	=	axial nerve fiber of the retinal cells of the simple eyes.
gc	=	ganglion cells.
ind	=	impression of the lens probably due to the pressure of weight against the surrounding tissue.
l	=	lens.
lp	=	long pigment cells.
m	=	muscle fibers.
namp	=	nuclei of ampulla cells.
nc	=	network cells (Figs. 13 and 16), and nettle cells (Figs. 28, 29).
nf	=	nerve fibers and tissue.
nlp	=	nucleus of long pigment cell.
nm	=	nucleus of muscle cells.
nprc	=	nucleus of prism cell.
npyrc	=	nucleus of pyramid cell.
nz	=	nuclear zone.
pr	=	prism of prism cell.
prc	=	prism cell.
pyr	=	pyramid of pyramid cell.
pyrc	=	pyramid cell.
pz	=	pigmented zone.
r	=	retina.
s	=	secretion in endo. of tent. and ampulla.
sh	=	shrinkage space.
sec	=	vitreous secretion in the lumen of the simple eyes.
sla	=	supporting lamella.
vb	=	vitreous body or zone.
x	=	(1) the approximate level at which Fig. 4 should be cut transversely to give Figs. 1 and 3. (2) the thickening of the supporting lamella in Fig. 13 to support the lens.
*	=	Point of approximation of cells of lenses in Figs. 7 and 13.

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