Further note by Grice on 'inflexible tying' (p. 144 of "Vacuous Names")

If he speaks of 'inflexible tying' on p. 143, there is a second intersting comment on the next page:

"A name alpha may be introduced EITHER

so as to be inflexibly tied, as

regards te truth-value of utterances

containing it, to a given definite

description delta, OR so as to be NOT SO TIED

(delta being univocally employed); so

the difference between the two ways of

introducing alpha may reasonably be regarded

as involving a difference of sense (or

meaning) for alpha; a sense in which

alpha may be said to be equivalent to

a definite description and a sense in

which it may not."