110 



GENERAL BIOLOGY 



istic wavy appearance; often they are united in bundles and run in all 

 directions. A few yellow elastic fibers may be scattered among the 

 white. These are always straight, however, and not wavy. If the tissue 

 should be treated with acetic acid, the white fibers swell up and disap- 



XfpsSK^^ ^':- s 4?^ :; ' J ?^ 



m-sXM 



illlii 



!>'>.' ._' V - < x. ... v -* ?-.V<O 



O/r circumjeren- 

 Ital lamellae. 



Haversian or con- 

 centric lamellae. 



~ Haver sian canal. 



Fig. 40. 



A. Elastic Cartilage. 



B. Haversian system with one lacuna sketched. 



C. Segment of transversely ground section from shaft of a long bone, showing 

 all lamellar systems. (From Bohm and Davidhoff). 



pear. The yellow are not affected. The yellow fibers may also branch, 

 and when cut they do not curl as do the white fibers. In the various 

 spaces of the matrix ( ) connective tissue corpuscles 



or cells may also be found, varying in form and appearance, often united 

 with neighboring cells to form an irregular network, the meshes of 

 which are filled with intercellular substance. White fibrous tissue varies 

 in consistency and texture in different parts of the same animal. The 

 loose tissue binding muscles together is known as areolar ( ), 



being composed of sheets and strands intersecting each other in all 

 planes. It is this that forms the fascia for each muscle, being modified 

 into a tendon at the end. 



