_Adreso_ ..................................... ................................................ _Profesiono_ (ne obliga indiko) ............... _Naturala linguo_ ............................ _Eco_ ................................ @Sendez ta adherilo kun la suskripto@ (@per internaciona valoro@) _a la sekretaryo-kasisto_, @So. A. WALTISBÜHL, 46, Bahnhofstrasse, Zürich@ (@Suiso@). {1} Minima suskripto: fr. 1·25, shilling 1, mark 1, dollar 0·25. _Permananta membri_ pagas 50 fr. unfoye; _protektanta membri_ pagas 100 fr. unfoye. FOOTNOTES: [1] We do not therefore approve of the poetical attempts of Zamenhof, or the dramatic representation of Goethe's _Iphigenia_. [2] For other comparisons, such as musical notation, chemical formulæ, etc., compare the excellent brochure of W. Ostwald, _Die Weltsprache_. Compare also L. Couturat, _Pour la Langue Internationale_. [3] Here and elsewhere the following abbreviations will be used:-- G. = German, E. = English, F. = French, I. = Italian, R. = Russian, and S. = Spanish. [4] Concerning the criticism of Esperanto, cf. also Zamenhof, _Pri Reformoj en Esperanto_, 1894, _represita per zorgo de E. Javal_, 1907 (containing many important suggestions which the Esperantists have now unfortunately forgotten); A. Liptay, _Eine Gemeinsprache der Naturvölker_, 1891; E. Beermann, _Die Internationale Hilfssprache Novilatin_, 1907; K. Brugmann and A. Leskien, _Zur Kritik der Künstlichen Weltsprachen_, 1907; Couturat and Leau, _Conclusions du Rapport_, 1907; L. Couturat, _Étude sur la Dérivation en Esperanto_, 1907; Ido, _Les Vrais Principes de la Langue Auxiliaire_, 1908; many articles in the periodical _Progreso_, 1908; F. Borgius, _Warum ich Esperanto verliess_, 1908. [5] "What language aimed at languages have destroyed." The remarks contained in this chapter have been developed and applied to the criticism of Esperanto in my _Étude sur la Dérivation_ (1st edition, unpublished, 1907, 2nd edition in French and in Ido, 1909). [6] The letters D, E, F, I, R, S, are the initial letters of the names of the six chief European languages, and those placed after any word indicate to which of these languages the corresponding stem is common (D = Deutsch (German)). [7] "Talks to Teachers on Psychology," pp. 65, 66 (New York, H. Holt & Co., 1907). CONSTABLE & CO. LTD CHEMISTRY PRACTICAL METHODS OF INORGANIC CHEMISTRY. By E. MOLLWO PERKIN, Ph.D. 2_s._ 6_d._ net. CONTENTS:--Chapter I.--Introduction. Chapter II.--General Preparations and Methods. Chapter III.--Salts. Chapter IV.--Halogens and Halogen Compounds. Chapter V.--Metallic Oxides. Chapter VI.--Acids. Chapter VII.--Preparation of Metals and Metalloids. Chapter VIII.--Special Preparations. Index.