14

A fixed terminology is a great comfort. Let us term
the area on which a cut stands the place of
the cut, while the area or bottom of the cut
is the area within the cut. The cut itself is
not a graph nor the replica of a graph. No more
is the scroll. But the scroll with the two graphs
scribed in its two closes or areas makes
up a graph, or graph-replica; and this I
call an enclosure. The term may be used indifferently
to mean the graph or the replica.