Primacy, S. Peter's, defended by specific scriptural proof, unbroken succession, and perpetual recognition, [164];

attested by S. Ignatius, [218];

by S. Irenæus, [267];

by Tertullian, [352];

by S. Cyprian, [326-331];

necessary to the Church's unity, [146-8];

is linked with jurisdiction, and is the expression of Christ's sovereignty, [345];

brought out by the questions of penance, rebaptising heretics, and keeping Easter, [351-5];

in it lies the unity of the Episcopate, [334].

Pythagoras, [377];