126 TISSUES IN GENERAL. 



corpuscles are imbedded. Properties common to all of these 

 corpuscles are : they lie in cavities of the basis-substance, their 

 periphery is scalloped, and they are possessed mostly of one 

 nucleus. The nucleus and nucleoli look exactly like those of 

 colorless blood-corpuscles. 



In the basis-substance, stained brown by nitrate of silver, 

 light fields of varying shape appear, which behave like those of 

 the umbilical cord and the tendon. Here, too, the basis-substance 

 is traversed by branching lines, which interconnect the large light 

 fields. (See Fig. 39.) 



Slight gold tinction of the periosteum brings to view deli- 

 cate radiating scallops at the periphery of the corpuscles, and 



delicate vertical filaments in the 

 interstices between the rhombs. 

 The shining elastic ledges are 

 transversely striated, being 

 pierced by violet filaments. Deep 

 gold-stain shows a dark violet 

 reticulum throughout the basis- 

 j c substance, just as in other va- 

 rieties of connective tissue. 



The perichondrium in all es- 

 sentials is identical in its struct- 

 ure with the periosteum. Where 

 fibroiis cartilage lolends with peri- 

 chondrium, as on the lateral sur- 

 faces of the condyles of femurs 

 of younger animals, the gold 



FIG. 40. BONE-CORPUSCLE FROM A tinction evidences a dense re- 

 RPOSELY WOUNDED SCAPULA OF ticulum of offshoots of the cor . 

 CAT THIRD DAY OF INFLAMMA- ,., 



TION. CHROMIC ACID SPECIMEN. P uscles of fibrous cartilage. 

 [PUBLISHED IN 1872.] Tissue of bone. The basis-sub- 



c, the nearly- homogeneous piastici, with stanceof juvenile bone is striated, 

 j;^ 1 " 1 '^*^ 110018 - Magnified 800 that of older bone lamellated. 



The lamellse are plates separated 



from each other by a non-calcified basis-substance, and each 

 lamella is composed of flat, oblong lenticular masses, which are 

 curved according to the lamella and contain one central bone- 

 corpuscle. 



In the earliest stages of inflammation of bone, the protoplasma 

 swells so that, without any re-agent, numerous offshoots of the 

 bone-corpuscles become visible, which freely anastomose and pro- 



