94 
As the skin of the head merges into the skin or horny plates of the 
mandibles, they are not separated and the skull is not taken out. As the 
skull goes back inside the skin, liberties may be taken in cutting the skull, 
which would not be permissible with a mammal skull. 
With the scissors make a cut directly across the roof of the mouth, 
below the orbits, but without cutting the lateral supports of either the 
upper or lower jaws. Then make incisions from each end of the preceding 
cut within the branches of the mandibles along the under side of the skull 
