XVIII.] THE LYMPHATIC SYSTEM. 203 



negative image. Note the clear branched 

 spaces, whose sinuous outline resembles that 

 of an epithelium-cell of a lymphatic capillary. 

 The clear spaces, cavities containing unstain- 

 ed connective-tissue corpuscles, stand out in 

 strong contrast with the surrounding stained 

 matrix. The junction of these spaces with 

 a lymphatic capillary, may here and there be 

 seen. 



DEMONSTRATION. 



The injection of the lymphatics of the testis. 

 (Schafer's Practical Histology, p. 216.) 



