Cal. Civil Code - CIV § 2295. Section 2295.An agent is one who represents another, called the principal, in dealings with third persons. Such representation is called agency.
Cal. Civil Code - CIV § 2296. Section 2296.Any person having capacity to contract may appoint an agent, and any person may be an agent.
Cal. Civil Code - CIV § 2297. Section 2297.An agent for a particular act or transaction is called a special agent. All others are general agents.
Cal. Civil Code - CIV § 2299. Section 2299.An agency is actual when the agent is really employed by the principal.
Cal. Civil Code - CIV § 2300. Section 2300.An agency is ostensible when the principal intentionally, or by want of ordinary care, causes a third person to believe another to be his agent who is not really employed by him.