Mohammed and Zarif--for Zarif's progress was almost equal to that of his fellow-pupil, though he seems a little less gifted from the standpoint of higher mathematics-Mohammed and Zarif in this way reproduce the words spoken in their presence, spell the names of their visitors, reply to questions put to them and sometimes make little observations, little personal and spontaneous reflections to which we shall return presently. They have created for their own use an inconceivably fantastic and phonetic system of spelling which they stubbornly refuse to relinquish and which often makes their writing rather difficult to read. Deeming most of the vowels useless, they keep almost exclusively to the consonants; thus Zucker, for instance, becomes Z K R; Pferd, P F R T, or F R T, and so on. I will not set forth in detail the many different proofs of intelligence lavished by the singular inhabitants of this strange stable. They are not only first-class calculators, for whom the most repellent fractions and roots possess hardly any secrets: they distinguish sounds, colours, and scents, read the time on the face of a watch, recognize certain geometrical figures, likenesses and photographs. Following on these more and more conclusive experiments and especially after the publication of Krall's great work, Denkende Tiere, a model of precision and arrangement, men's minds were faced with clear and definite problem which, this time, could not be challenged. Scientific committees followed one another at Elberfeld; and their reports became legion. Learned men of every country--including Dr. Edinger, the eminent Frankfort neurologist; Professors Dr. H. Kraemer and H. E. Ziegler, of Stuttgart; Dr. Paul Saresin, of Bale; Professor Ostwald, of Berlin; Professor A. Beredka, of the Pasteur Institute; Dr. E. Clarapede, of the university of Geneva; Professor Schoeller and Professor Gehrke, the natural philosopher, of Berlin; Professor Goldstein, of Darmstadt; Professor von Buttel-Reepen, of Oldenburg; Professor William Mackenzie, of Genoa; Professor R. Assagioli, of Florence; Dr. Hartkopf, of Cologne; Dr. Freudenberg, of Brussels; Dr. Ferrari, of Bologna, etc., etc., for the list is lengthening daily--came to study on the spot the inexplicable phenomenon which Dr. Clarapede proclaims to be "the most sensational event that has ever happened in the psychological world." With the exception of two or three sceptics or convinced misoneists and of those who made too short a stay at Elberfeld, all were unanimous in recognizing that the facts were as stated and that the experiments were conducted with absolute fairness. Disagreement begins only when it becomes a matter of commenting on them, interpreting them and explaining them. 4