116 THE CONNECTIVE TISSUES, BY A. ROLLETT. 



either of large size and elliptical, or smaller, and then resembles 

 the section of a bi-convex lens, from which delicate, greatly 

 attenuated, and branched fibres are given off (bone canaliculi). 

 The canaliculi proceeding from different corpuscles inter- 

 communicate,* and thus connect the dark areas with one 

 another. 



The dark markings are distributed through a clear matrix 



Fig. 9. 



Fig. 9. Longitudinal section of human ulna. 



(fig. 9) ; the material in which the corpuscles are situated 

 either appears quite homogeneous in the form of a lamina, or 

 is perforated by variously arranged spaces, which are often so 

 large and numerous that only a network of bony trabeculse of 



* Kruckenberg, Miiller's Archiv, 1849, p. 412. 



