Historical research has ~ecently made it dear that, prior to Austin and. his followers, there was but one author who developed a full-fledged theory of the given sort: the phenomenologist Adolf Reinach (1884-1917).' In his The A Priori I'oundutions of the Ciui/ I aIO, pubhshed. in 1918„' Reinach developed a theory of — 'as he termed them — "social acts*' which is not only on a par with the later speech act theories but in fact surpasses them in.