HISTOLOGY OF THE STRIPED MUSCLE-FIBRE. 
389 
DESCRIPTION OF PLATE XXIV, 
Illustrating Mr. B. Melland’s Paper on “ A Simplified View 
of the Histology of the Striped Muscle-Fibre.” 
Diag. 1, 2, 3, and 4. — Diagrammatic view of the network in striated muscle. 
Diag. 1. Perspective view of the fibre, showing the transverse network a 
at each membrane of Krause, and the longitudinal lines. 
Diag. 2. Perspective view of a portion of the network, showing : — a. The 
transverse networks, with polygonal meshes and dots at the nodes. 
b. The longitudinal bars of the network ending in the dots. 
Diag. 3. The fibre seen in longitudinal view. The transverse network, «, 
appears as a row of dots crossing the fibre (in the position of Krause’s 
membrane), c. Minute thickenings on the longitudinal bars of the 
network, midway between the transverse networks. 
Diag. 4. The fibre seen in transverse section. 
Diag. 5 — Network as seen in a longitudinal view of the fibre, showing the 
production of alternating bright and dim bands by refraction around the 
nodal dots. 
Diag. 6. — So-called transposition of the bands, as seen in an osmic acid 
preparation of muscle of Bee. u. Appearance at upper focus, l. Appearance 
at lower focus. 
Diag. 7. — Oil globules in water, showing their refractive effect upon light, 
u. At the upper focus, each globule surrounded by a dark border, l. At the 
lower focus, each globule surrounded by a bright halo. 
Diag. 8. — Production of sarcous elements by contraction of the matrix and 
splitting along the guide lines formed by the bars of the network (seen in 
spirit preparations). 
Diag. 9. — Formation of Conheim’s areas by contraction of the matrix as 
above. In this transverse view of the fibre the prismatic sarcous elements 
are seen on end, and appear as polygonal areas separated by bright lines. 
Fig. 1. — Fibre of Dytiscus, prepared by the gold method. Zeiss, D obj.. 
No. 5 oc. 
Fig. 2. — Dytiscus, gold method, portion of a fibre more compressed than in 
Fig. 1. 
Fig. 3. — Fibre of Bee, prepared by the gold method ; transverse networks 
in perspective. 
Figs. 4 and 5. — Dytiscus, gold method, showing isolated discs consisting of 
a network. 
Fig. 6. — Fibre of Dytiscus, gold method, splitting into discs. 
