THE AMERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL 



Vol.. XVIII. MARCH, 1897. No. 2 



The Striped Muscle Fibre : A few Points in its Compara- 

 tive Histology. 



Bv LOUISE TAYLER, 



PATTERSON, N. J. 



(With Frontispiece.) 



The striped muscle fibre has been the centre of interest 

 for many years. This may be seen from all books touch- 

 ing upon the subject found in any biological library. 

 Perhaps the most work has been done toward determin- 

 ing the ultimate nature of the cross striping, and in other 

 regards it lias had less attention. In the few notes here 

 ottered, some points of a different nature are presented; 

 points not so generally presented in those discussions. 



The muscle tissue of the following animals has been 

 examined in regard to these points: 



. 1 The Elasmobranch, 2 Frog, 



3 Turtle, 4 Snake, 



5 Pigeon, 6 Rabbit, 7 Cat. 



Before taking up this discussion a general review of 

 striped muscle may be of use. The mass of skeletal 

 muscular substance is collected into distinct organs, mus- 

 cles, the mosi of which are attached by means of fibrous 



DESCRIPTION OF THE FRdNTISPIBCE. 



1. Traiisectiou of striped luUBcle; frog, 



2. Transection ofstriped muscle; rabbit. 



'•!. Larger section of striped muscle fibre ; frog. 



4. Same as Fig. 1, enlarged. 



5. Transection ofstriped muscle fibre; turtle. 



6. Transection ofstriped muscle fibre : pigeon. 



7. Same as in Fig. -i, enlarged. 



8. Transection ofstriped muscle: lX.-day cbick embryo. 



9. Transection of striped muscle ; •20-day chick embryo. 



