44 Transactions of the Boijal Microscopical Society. 
mesoderm and the endoderm having shrunk away from the theca, 
where its vitality had been lowered. It has been suggested to me 
that they might he calcifications occurring in the lower border of 
the stomach (the secondary tubes corresponding with this in 
diameter), but the branched mode of termination frequently seen 
does not seem compatible with this. 
