A note on Browne's “source function” in five-dimensional relativity

One of the postulates of the Kaluza-Klein theory is that the lines representing events should be geodesics. Recently a claim has been made that in the Jordan-Thiry version of the theory, this is not only unnecessary, but in fact contradicts experiment. It is the purpose of the present note to show that this conclusion is in error and to point out an undesirable feature of the entire Jordan-Thiry procedure.