84

106

For take any M you please, I care not what. Call
this M_y. Now M_y belongs to one or other of
three classes; namely 1st, the class of Ms which
I positively require my test sam to include, or 2nd,
the class of Ms which I require my test sam
to exclude, or 3rd, the class of Ms as to which
I do not care whether they be included in the
test sam or not. If M_y belongs to the first class,
it is one of the Ms that I require my test sam to
contain. But those where the Ms that were
not contained in the sams of M that were r
to them. Plainly then if M_y belongs to this class
my test sam is not r to it. For my test sam, in
this case, contains M_y, while the only sam of
Ms that is in the one-to-one relation r to M_y does not