artificial language with such a regular structure that it can be employed at once without making mistakes._ In accordance with these ideas, the programme of the Delegation was as follows:-- "(1) It is desirable that an international auxiliary language should be introduced which, though not intended to replace the natural languages in the internal life of nations, should be adapted to written and oral intercourse between persons of different mother-tongues. "(2) Such an international language must, in order to fulfil its object, satisfy the following conditions:-- "(a) It must be capable of serving the needs of science as well as those of daily life, commerce, and general intercourse. "(b) It must be capable of being easily learnt by all persons of average elementary education, especially those belonging to the civilised nations of Europe. "(c) It must not be any one of the living national languages. "(3) The decision as to the choice of a language is to be referred in the first place to the International Association of Academies, but if the latter should refuse to consider the matter or come to no decision, to the committee of the Delegation. "(4) Circulars are to be sent to learned, commercial, and legal societies requesting them to signify their approval of the above programme." The success of this appeal was extraordinary. It was now evident for the first time how many thousands of people of all nations were enthusiastically in favour of the introduction of an international auxiliary language. The _État de la Délégation_, which the latter published yearly, included on October 1st, 1907, in the list of corporate bodies alone, the names of 310 clubs, societies, and congresses, not a few of which possessed a membership exceeding 1,000. It is interesting to rapidly pass in review the extremely varied character of the societies included therein. We find, for example, commercial schools, chambers of commerce, merchants' clubs, stenographers, the printing trade, correspondence bureaus, photographic clubs, associations of municipal and other officials, societies of shipping employés, legal clubs, pedagogic and religious societies, officers' clubs, institutes for the deaf and dumb and for the blind, sociological, medical, and health societies, peace clubs, political and graphological societies, touring, bicycle, and automobile clubs, sport clubs, bibliographic societies and library staffs, and finally all sorts of special scientific societies and congresses. Arranged according to nationality, we find representatives of France, England, Germany, Switzerland, Denmark, Spain, Greece, Italy, Belgium, Norway, Sweden, Holland, Russia (including Poland), Roumania, Austria (including Bohemia and Hungary), Mexico, Peru, the Argentine, Algeria, Tunis, the United States, Chile, etc. There is also the "academic list," which contains the names of no less than 1,250 professors, belonging to 189 universities, technical high