 As is well known, Kripke (1980) set forth a causal-historical account of reference as an alternative to the descriptivist picture. This account begins with an initial baptism that introduces a name and goes on with causal chains transmitting the reference of the name from speaker to speaker. In this picture, Aristotle is the man once baptized so; he might not have been the student of Plato or done any other thing commonly attributed to him. Kripke thought this picture to apply both to proper names and general terms. It is hardly indicated, however, how this picture works for expressions referring to theoretical entities (cf. Papineau 1996). Kripke’s story is particularly counterintuitive in view of the ahistorical manner of teaching in the natural sciences. There, up-to-date textbooks and recent journal articles are more important than the original, historical introduction of a theoretical term. The Kripkean causal story may also be read as an account of reference fixing without being read as a story of grasping the meaning of theoretical terms. Reference, however, needs to be related to meaning so as to ensure that scientists know what they are talking about and are able to identify the entities under investigation. Notably, even for expressions of everyday language, the charge of not explaining meaning has been leveled against Krikpe’s causal-historical account (Reimer 2010). The same charge applies to Putnam’s (1975) causal account of reference and meaning, which Putnam himself abandoned in his (1980).