OBSERVATIONS ON THE HISTOLOGY OF STRIPED MUSCLE. 81 



Summary. 



1. The transverse portions of the network of the striped 

 muscle- fibre are directly connected with the muscle-cor- 

 puscles. 



2. The nerve-ending appears to be connected with the 

 muscle-network, and chiefly with the longitudinal bars of the 

 network. 



3. The development of the network takes place at a very 

 early stage in the development of the fibre^ and the network 

 develops from the first in its permanent form. 



4. The network develops first at the surface^ and grows cen- 

 tripetally. It does not appear to be connected with the 

 muscle-corpuscles till the fibre is fully developed. 



5. Each muscle- fibre appears to be developed from a single 

 cell, and not by a coalescence of cells. 



The investigations described in this paper were carried on 

 ia the Physiological Laboratory of Owens College during the 

 winter of 1887. My thanks are due to the Council of the College 

 for a special grant to enable me to carry on the research. 



I must express my thanks to my brother Professor Milnes 

 Marshall for many valuable suggestions in producing this 

 paper, and for examining several of the preparations. I must 

 also thank Professor Stirling for much assistance to me in my 

 work. 



DESCRIPTION OF PLATE XI, 



Illustrating Mr. C. F. MarshalFs paper, " Further Observa- 

 tions on the Histology of Striped Muscle." 



[The main details were drawn under the camera in all the figures.] 



Fig. 1. — Muscle-fibre of Dytiscus, showing transverse networks connected 

 with muscle-corpuscles. The longitudinal bars of the network are omitted 



VOL. XXXI. PART I. NEW SER. F 



