INFLAMMA TION. 



357 



we meet with elements in which we observe, instead of nuclei, 

 formations, standing apart, which have characteristics of nucle- 

 oli. Between the rhomboidal groups of the above-described 

 elements we see narrow, fusiform corpuscles, perhaps flat spin- 

 dles, seen on edge. The interstices between the single elements 

 of all varieties produce narrow, light rims, all of which are trav- 

 ersed by transverse, extremely delicate, grayish lines. 



The periosteum here is evidently broken into elements, iden- 



JL2 



FIG. 149. PERIOSTITIS OF THE SCAPULA OF A GROWN CAT, THIRD DAY OF 

 INFLAMMATION. CHROMIC ACID SPECIMEN. [PUBLISHED IN 1873.] 



N, nucleated plastid ; .&, solid lump of the aspect of a nucleolus ; L?, plastid with partly 

 homogeneous, partly reticular, formations, of the aspect of nucleoli ; L$, vacuoled bioplasson 

 lump, surrounded by a bright rim of homogeneous bioplasson. Magnified 800 diameters. 



tical with those which lay the foundation for the development of 

 the periosteal tissue. 



All these features were still more prominent in specimens which 

 I obtained on the fifth day of inflammation from the periosteum 

 of a young, grown cat, after 'subcutaneous fracture of the leg 

 bones. In the inflamed periosteum, the elastic strips which divide 

 the tissue into rhomboidal ribbons could be recognized. Some of 



