Champerty is illegal sharing of profits of litigation, sec 421. Maintenance is stirring up of unfounded litigation, sec 422. Agreement to sell claims on shares not invalid, sec 423.

Purchase on speculation of suit void, sec 424.

Parties jointly interested may bind themselves to expenses of litigation, sec 425.

Attorney cannot purchase client's interest, sec 426.

Agreement for contingent fees not necessarily invalid, sec 427.

Barrister can recover for services, sec 428.

Objection of maintenance cannot be set up by stranger, sec 429.