Abstract
According to some critics Carnap's philosophy is "reflectioness", i.e. without epistemic content. In contrast to this assertion this essay will show that in the writings of Carnap's semantical period, especially in "Empiricism, Semantics, and Ontology", the fundamentals of an epistemology are developed. It may be called linguistic internalism. The exposition of frameworks are interpreted as an epistemological foundation of semantics. Several problems within this project are discussed, e.g. the determination of domains of frameworks, ontological existence sentences, the relation between theories and frameworks and limits of rationality.