ENCHONDROMA. 
167 
layer of bone, in which the lacunae are large, and have 
but few canaliculi; these, as shown in Fig. 127, d , 
very much resemble the nuclei of the cells, and, in all 
probability, were formed from them. 
FiG. 127 . 
Cells and bone from an Enchondroma of the tibia : n, cells each having a 
stellate nucleus ; b, cells showing laminated deposit and ossific granules ; 
c, stellate nuclei ; d, thin portion of bone in connection with the cartilage. 
With regard to the formation of the lacunae of bone, 
two views are now entertained by different histologists. 
The first is that given in the “ Physiological Anatomy ” 
of Professors Todd and Bowman, in which it is stated 
that the lacunae are developed from the nuclei of the 
cartilage cells ; the other that of Mr. Tomes, published 
in “ Todd’s Cyclopaedia,” article “ Osseous Tissue,” in 
which it is asserted that the lacunae are not developed 
