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In An Introduction to Wittgenstein’s Tractatus, Elizabeth Anscombe took it to be a fault of the Tractatus that it excluded the statement “‘Someone’ is not the name of someone,” which she took to be obviously true. It is not a bipolar proposition. I examine whether she is right that the Tractatus excludes such propositions, and I consider her example in relation to other propositions which, arguably at least, have no intelligible negation. In considering the particular case of Frege’s response to Benno Kerry about the concept « horse, » I try to develop an account of the place in Wittgenstein’s philosophy for certain sorts of proposition which do not have an intelligible negation.