THE HISTOLOGY OP THE STEIPED MUSCLE FIBRE. 241 



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 con' 



sisting of a network. 

 Fig. 6. — Fibre of Dytiscus, gold method, splitting into discs. 

 Fig. 7. — Lobster fibre, gold chloride ; isolated portion of a fibre, net- 

 work pulled out of shape. Exactly similar networks are 



seen in the Frog and Crayfish. 

 Fig. 8. — Frog, gold method; network arranged typically, and showing 



transverse striping. 

 Fig. 9. — Eat, gold chloride; longitudinal view of a portion of a fibre. 



(Preparation by C. F. Marshall.) 

 Fig. 10. — Lobster, gold chloride, splitting into fibrils. 

 Fig. 11. — Frog. Transverse section of the frozen fibre, stained by 



the gold method. 

 Fig. 12. — Dytiscus, gold method; isolated portion of the network. 

 Fig. 13. — The same, more highly magnified. (Zeiss, F obj., No. 5 



eyepiece.) 

 Fig. 14. — The same, showiug refracting effect of the network, l. 



Lower focus, u. Upper focus. 

 Figs. 15 and 16. — Fibres of Bee, treated with acetic acid, then 



Kleinenberg's hseinatoxylm. 

 Fig. 17. — Fibre of Bee, treated with acetic acid, then watery solution 



of logwood. The transverse networks seen more or less 



obliquely. 

 Fig. 18. — Fibre of Bee, prepared with osmic acid, shows a fixed wave 



of contraction. 

 Fig. 19. — Living fibre of Bee, showing longitudinal view of network, 



(iV immersion obj). 

 Fig. 20. — Living fibre of Bee, transverse networks seen somewhat 



obliquely. 

 Fig. 21. — Portion of a fibre of Dytiscus, stained in hsematoxylin after 



the action of spirit. Shows sarcous elements. 

 Where not otherwise stated, the drawings were made from Zeiss, 

 D. obj., No. 5 oc. 



