We must now consider five impediments to marriage, namely the impediments of impotence, spell, frenzy or madness, incest, and defective age. Under this head there are five points of inquiry:

A1 Whether impotence is an impediment to marriage?

A2 Whether a spell is?

A3 Whether frenzy or madness is?

A4 Whether incest is?

A5 Whether defective age is?