Full Idea
If we see that certain powers and capacities are explained by the nature of certain particulars and are necessarily attendant upon them, then we have an explanation of why certain things must go together and happen as they do.
Gist of Idea
If the nature of particulars explains their powers, it also explains their relations and behaviour
Source
Harré,R./Madden,E.H. (Causal Powers [1975], 4.I)
Book Reference
Harré,R/Madden,E.H.: 'Causal Powers: A Theory of Natural Necessity' [Blackwell 1975], p.71
A Reaction
They are offering this as an account of induction, as well as of explanation, and it is a nice summary of the account which I take to be correct.