LESSON V. 

 CONNECTIVE TISSUE. 



A. Connective-tissue Fibees. 



1. Elastic Fibres. 



a. Tease out in water a morsel of ligamentum 

 nuchas. It is almost entirely made up of 

 rather large branching, and anastomosing 

 fibres having distinct outlines, and curling at 

 their ends. 



b. Irrigate with acetic acid (1 to 5 p.c); the 

 fibres are unaffected. 



2. White Fibres. 



a. Place on a slide a small piece of a thin 

 tendon, e.g. from a digit of a frog or from 

 the tail of a mouse (cp. B. § 3) and, keeping 

 it in position at one end with a needle, 

 separate as completely as possible the fibres 

 from one another at the other end by passing 

 a needle through it in the direction of its 

 length. If the unteased end of the tendon 

 is so thick that it would tilt up the cover slip, 

 separate with needles a small outer portion 



