DEVELOPMENT OF THE HYPOPHYSIS 443 
6. There is glandular growth from the roof of the superior 
lobe and the inferior lobes, as has been described by Sterzi and 
others, and from the floor of only the anterior and posterior 
extremity of the anterior lobe in all adults. 
7. The cells of both anterior and inferior lobes are acidophilic 
in character. 
8. The cell columns of the superior lobe are solid as Sterzi 
described them. 
9. Frequently the anterior and inferior lobes stain more densely 
than does the superior lobe. In these cases, it is the nuclei which 
take the darker stain. In general the anterior and inferior lobes 
may be considered the chromophilic ones. 
10. Spaces containing some colloid-like secretion are present 
in the superior lobe. A similar secretion is present in the lumina 
of the tubules of the anterior and inferior lobes and in the large 
main lumen. 
