CHAPTER VI. 11 



MUSCLE. 



Non-striped muscle. Small intestine of cat. (p. 11, s. 22, 

 m. B.) Tease a piece of the muscular coat so as to dis- 

 sociate the fibres ; (H) find isolated fibres, fusiform in shape, 

 with elongated nuclei. 



Stomach of a cat. T.S. (p. 3, s. 22 & 24, c. P., m. B.) (L) Find 

 the muscular coat composed of two layers of muscular fibre, one 

 cut longitudinally the other transversely. In the latter the 

 fibres appear as polygonal areas united to each other by a 

 cementing substance, across which fine bridge-like connections 

 may sometimes be observed. 



The frog's bladder (Fig. 4) should be prepared as follows, to show 

 this kind of fibre. Excise the organ, slit it open, and spread it, peritoneal 

 surface downwards, upon a slide ; scrape the epithelium off by stroking 

 it with the pad of the finger, the tissue will be partly dried and 

 will adhere to the slide as a nearly transparent film. Treat with a 

 few drops of absolute alcohol, which will turn it opaque, cover it 

 with a pool of hsematoxyline, and observe the staining taking place ; 

 as soon as it is deep enough rinse with water, dehydrate with alcohol, 

 to which a small quantity of eosine should be added as a ground 

 stain, complete the dehydration and mount in balsam. 



(L) A network of muscular bands of various sizes forms the 

 substance of the vesicular wall, across the meshes of which 

 (H) isolated fibres, with well-marked nuclei, are encountered. 

 Three-branched fibres are occasionally met with. Blood vessels 

 containing distorted corpuscles (nucleated) also unremoved 

 surface epithelial cells are to be recognised. 



Cardiac muscle. Teased of sheep, (p. 11.) Dissociate some 

 of the tissue in a drop of picrocarmirie, the tissue cannot 



