51

32

being able to scribe the same graph as many times
as we please on any vacant places we like.
Now each of the areas of any cut corresponds
exactly to some one point or place locus of the
sheet of assertion where there is mapped,
though undeveloped, the real state of things which
the graph of that area denies. In fact
it is represented by that line of the sheet
of assertion which the cut itself
marks. By taking time enough
I could develope this idea much further,
and render it clearer; but it would not
be worth while, for I only mention it
to prepare you for the idea of quite
different kinds of sheets in the gamma