How to Frege-Dummett a Putnam

The object of this paper is to suggest how the Frege-Dummettian notions of criterion of identity and criterion of application can be put to work within Putnam's account of reference for natural kind terms in "Meaning of ‘Meaning' ". By doing so, some light can be shed on Putnam's earlier views on "necessity relative to a body of knowledge" as well as his later views on sortal identity. If the Frege-Dummettian criteria are indeed at work within Putnam's account, then we must either give up (strong) rigidity or else give up the division of linguistic labor hypothesis. I will give an example from biological nomenclature that may sway us towards giving up the former.