TISSUES IN GENERAL. 



119 



The basis-substance is traversed by a reticulum which has for 

 points of intersection of its threads coarser and finer granules. 

 By tracing the action of the gold solution, we can satisfy ourselves 

 that the densest reticulum with the smallest mesh-spaces belongs 

 to the yellowish, shining medullary elements, and the larger 

 violet lumps are either homogeneous nuclei or nucleoli. The 

 most delicate reticulum with smallest granules as points of inter- 

 section, and the largest mesh-spaces, corresponds to those places 



FIG. 34. MEDULLARY TISSUE FROM A LONGITUDINAL SECTION OF THE 

 FEMUR OF A NEW-BORN PUP. THE BONE-TISSUE DECALCIFIED BY 

 CHROMIC ACID, AND THE SPECIMEN INTENSELY STAINED WITH A SOLU- 

 TION OF CHLORIDE OF GOLD. [PUBLISHED IN 1873.] 



BB, bone-corpuscles ; P, partly vacuoled, partly roticular plastids ; M, the basis-substance 

 exhibiting a reticular structure. Magnified 800 diameters. 



of the medullary tissue which, in the unstained condition of the 

 specimen, appeared as an apparently homogeneous and structure- 

 less basis- substance. 



