practical results, the best will be those obtained by asking a dog what he has seen, heard, or scented, etc. Indeed, it is along these lines that the police dogs have proved their worth and importance. Yet it is very necessary that one should make sure that one's dog is not a liar, but an animal capable of taking up its job in the right manner. With our present knowledge, however, we are unlikely to achieve very much, since we cannot say to a dog--"go here or there"--or--"take this letter to so and so." Not but what dogs have--in exceptional cases and after training--learnt to carry out such instructions, but it has resulted _without their thought-activity having been developed_. They get familiar with a certain road, and--basket in mouth--they will proceed to the baker's but--independently of habit and external impression--by the mere appeal to the brain or by means of the most persuasive words, we can attain to nothing worth mentioning, nothing that could be of distinct value, where a dog is kept for use. The sense, the object, and the reason for this educational work must be sought on other grounds. A VARIETY OF ANSWERS It was some time after Lola had mastered the art of spelling before I was able to get her to make independent replies. The first of these was given on the 13 April, 1916, and from that time onward they became easier and more frequent: most of those I have set down date from that period. These answers were at once noted, according to their numerals, and when the sentence was complete it was transposed into letters of the alphabet. Whenever there were any spelling mistakes, the words were placed before her, and she was told to name each successive wrong letter in reading over her answer. As _I_ knew the equivalent letters, I was able to write them down at once, and if the reply was a short one and no paper at hand, I could memorize the letters, and enter them in a book as soon as the lesson was over--adding the questions to which such answers had been given as well as the dates. All other questions and answers, as well as particulars relating to new exercises were also set down here. Here is an answer I received from her on the 13 April, 1916: Lola was staying with me at Hohenheim, where we had arrived on the previous day, and I proceeded to Stuttgart in the morning. When I got home in the evening I asked Lola: "Is it nice here? have you had good food at father's?" to which the answer--quite wide of the mark--was--"wo wald?" ( = where is the wood?) For I had been telling her about all she would be able to enjoy and that, among other delights, there would be the woods; as however, her afternoon walk had only lain through the fields, her mind was now absorbed with the one idea--"where was the wood?"--to the oblivion of everything else.