Stock Exchanges are a relatively recent product of modern civilization, and like new comers in every field they are suspected and misunderstood. The most complex of all problems are economic problems, and the functions of Stock Exchanges form a most intricate part of political economy. It has, consequently, been a noticeable phenomenon in all contemporary industrial society that the activities of the stock markets have been a constant subject of agitation and legislative meddling. Most of this meddling has been based upon ignorance and misunderstanding, but in a broad view this ignorance and misunderstanding are excusable owing to the novelty and above all the great complexity of the factors at work. One of the needs of the time, therefore, is that the public, and their representatives in the Legislatures, should be enlightened as fast as possible with regard to the immensely important uses of these institutions, and to the operation of their very delicate machinery.