It is a striking proof of the fact that Agency is a modern subject in the law that Blackstone, in his Commentaries on the Laws of England, does not mention the subject by name, and barely makes a four-line reference to one sort of agent in his classification of servants. The old ca~es do, of course, sometimes deal with pure agency questions, but the agent is usually referred to as a servant or a factor, and the questions in issue are generally settled upon some principle of the law of Master and Servant. Agency is essentially a business- relation; hence its modernness, if that term may be permitted; hence, also, the singular fact that until within very few years courts treated it as a broadened service, involving wider discretion, and faile...