146 FORMATION OF SHELLS OF ANIMALS, ETC., 
calcareous particles of organized tissues. And lastly, that 
there is ocular proof of the same process in softer sub- 
stances, as shown in the development of the hooklets of 
the Cysticercus cellulose. Whilst in support of the oppo- 
site view, there is not one fact of a demonstrable character 
which can be adduced; hence, with the entire weight of 
evidence in favour of the coalescing process, its operation 
maybe fairly considered here to be assatisfactorily proved in 
reference to the formation of the crystalline lens as it has 
been shown to be in the other structures which have been 
described. But as these observations only apply to the for- 
mation of the large albuminous globules, it will be neces- 
sary to explain also the transformation of these globules 
into transverse striz ; then the disappearance of these striz ; 
after that the appearance of longitudinal zigzag lines be- 
tween the converging fibres; and, lastly, the entire oblite- 
ration of all marking at the central part of the lens. The 
globules as thus formed appear then to be merely rounded 
masses of an albuminous material, with a dense and very 
dilatable exterior lamina. The greater density of this 
layer is the natural effect of the attractive force to which 
the formation of these, and all other globular bodies con- 
structed in the same manner, and on the same principle, is 
due. And without doubt this is the mode of formation of 
the peripheral layer of all corpuscles which have received 
the appellation of “cells,” this layer being the cell-wall, 
or cell-membrane, as it is frequently called. These globu- 
lar particles are, in the entire eye, contained in an elastic 
capsule—the capsule of the lens—where, at first, they 
are placed without any apparent order, but afterwards 
they become arranged in converging lines. (See fig. 10.) 
Now, as in the growing condition of the lens fresh por- 
tions of solution of albumen, forming new globules, will 
