[CG] Imprecise probabilities

I’m studying imprecise probabilities which initially works as an extension in Boole’s Laws of Thoughts. It seems like Boole was solving a set of algebraic equations for probabilities where some of the probabilities do not have precise values therefore need to be bounded. Has anyone studied Boole’s algebraic system of probabilities? Is Peirce extending Boole’s algebraic system in his Logic of Relatives?