A COMPARATIVE STUDY OF STRIATED MUSCLE. 49 
Fic. 4.—Isolated fibre from Syllis schmardiana, treated with bichro- 
mate of potash, strongly stained with hematoxylin by Heidenhain’s method, 
and washed with weak potash solution. Seven transverse networks. 
Fie. 5.—A portion of fibre of Syllis corruscans, preserved in 1 per 
cent. bichromate of potash, strongly stained with Heidenhain’s hematoxylin, 
teased and crushed. x 750. ¢r. Transverse networks. 
Fic. 6.—From a transverse section of the gizzard of Syllis corruscans; 
portion of longitudinal section of striated fibre. x 750. ¢r. Transverse 
networks. 
Fie. 7.—Portion of fibre of S. corruscans, treated with chloride of gold 
and formic acid, in which the transverse networks are not stained. 
Fic. 8.—Portion of a gold-chloride specimen of the same, in which the 
transverse networks appear as continuous bands of granular material. x 600. 
tv, Transverse network. 
Fic. 9.—A similar preparation, in which the transverse networks (¢7.) have 
the appearance of transverse rows of isolated spindle-shaped granular bodies. 
Fic. 10.—A similar preparation, in which the connection between the 
spindles by means of delicate trabecule is preserved. 
Fic. 11.—Portion of a preparation of the same tissue, stronly stained with 
chloride of gold and crushed in glycerine, showing the broken end of a fibre 
which has become ruptured along the line of a transverse network (¢7.). 
x 750. 
Fie. 12.—Part of an unbroken fibre from the same preparation. x 750. 
Fic. 13.—Portion of a gold-chloride specimen of the same, in which the 
transverse networks appear to be composed of numerous spindle-like bodies 
closely connected together, their apices prolonged into the threads of the 
longitudinal networks. x 750. 
Fig. 14.—A similar preparation, in which the longitudinal networks and 
their connection with the transverse are more strongly marked. x 600. 
Fic. 15.—Part of a gold-chloride specimen, in which there has been partial 
destruction of the transverse networks, these being represented only by 
transverse rows of spindle-like bodies without connecting trabecule. x 750. 
Fic. 16.—Portion of a preparation in which oval spaces, with well-defined 
walls, appear in the transverse networks, with canals connecting them into 
longitudinal rows. x 750. 
Fic. 17.—Portion of the outer surface of the “gizzard” of Syllis 
corruscans, showing the hexagonal outer ends of the fibres, with the 
ganglion-cells (g.) and their radiating processes. The connecting processes 
between neighbouring ganglion-cells concealed by the annular bands of non- 
striated fibres (av.). x 350. 
