Abstract: We determine, for the particular subvarieties M,B,S of MS, the least congruences θ_M,θ_B,θ_S for which the quotient algebras belong to M, B, S respectively, then by means of Priestley's duality for MS-algebras we describe the topological representations of the duals of the maximal homomorphic images of MS-algebras.

Key words: MS-algebras, congruence, Maximal homomorphic image, Priestly space