The nature of 'agency' -- Creation of agency -- The actual authority of the agent -- Apparent authority -- Authority deriving from agency of necessity -- Ratification -- The agent's liability for breach of warranty of authority -- Legal relations between principal and agent : duties the agent owes to his principal -- Legal relations between principal and agent : rights of the agent against the principal -- Legal relations between principal and third party -- The tortious liabilities of principal and agent -- Legal relations between agent and third party -- Termination of agency.