ENCHONDROMA. 
165 
nuclei of large size, others, as at a, are dark and granular, 
the latter being in the first stage of ossification. In the 
specimen from which this preparation was taken, there 
were many points or spicula of bone, but the fibres 
were least numerous in these parts. 
FIG. 125 < 
A 
B 
Portion of an Enchondroma from 
the cheek : a, cells and matrix be- 
coming ossified, b, cells with nu- 
clei. 
FIG. 126 . 
A 
B 
Portion of an Enchondroma from 
the hand : a, cells imbedded in a 
fibrous matrix, b, cells detached 
from the matrix. 
The next specimens I shall describe are of great 
interest, as they throw considerable light on the 
formation of the lacunae of bone. The first, Fig. 126, 
is a thin section of one of the tumours developed from 
the phalanges, &c., of a hand, removed some years 
since by the late Sir Astley Cooper ; it is composed 
of a series of small cells, somewhat resembling the 
lacunae of bone, each cell having branching tubes or 
canaliculi projecting from it in all directions. Some 
of these cells, as shown at A, are firmly imbedded 
