68 White Fibrous Tissue. 



by taking a small portion from the mouse's tail and 

 mounting in salt solution, then irrigating it with very 

 dilute acetic acid, and watching the change that takes 

 place, as the fibrous tissue swells up and becomes in- 

 distinct, the cells becoming granular. 



The acetic acid should be only just sour to the taste. 



After a time the whole of the fibrous tissue will have 

 disappeared, leaving a very few elastic fibres which are 

 untouched by the acid. 



Take also some of the fresh tendon and place it in 

 logwood stain, to which a few drops of glycerine have 

 been added ; let it remain until deeply stained. Tease 

 out small portions in glycerine on a slide ; the tendon 

 cells will be well shown by this process. 



ELASTIC TISSUE. 



Make a preparation of mesentery of frog and mount 

 in glycerine ; a very fine network of elastic fibre will be 

 found throughout the whole structure. 



Take a small slice of the ligamentum nuchse of the 

 ox, which can be readily procured from the butcher's. 

 Place it in dilute acetic acid for some little time, until 

 it swells up, then tease a small portion in a drop of 

 glycerine on a slide. Cover and examine. 



WHITE FIBKOUS TISSUE 



Is well shown in many of the preparations of serous 

 membranes. A special preparation should, however, 

 be made, by hardening omen turn in 1 to 2 per cent, 

 bichromate of potash and staining with logwood; it 

 will show the large amount of fibrous tissue present in 



