In his efforts to pronounce _wie_ he always gave the vowel element like German "u" with the _umlaut_, but the "w" element was more like the English than the German sound of that letter. Taking into consideration the fact that he was only a little more than a year old, and was in training less than three months, his progress was all that could have been desired, and vastly more than had been hoped for. Had he lived until this time, it is my belief that he would have mastered these and other words of human speech to the satisfaction of the most exacting linguist. If he had only learned one word in a whole lifetime, he would have shown at least that the race is capable of being improved and elevated in some degree. Another experiment that I tried with him was one that I had used before in testing the ability of a monkey to distinguish forms. I cut a round hole in one end of a board and a square hole in the other, and made a block to fit into each one of them. The blocks were then given to him to see if he could fit them into the proper holes. After being shown a few times how to do this, he fitted them in without difficulty; but when he was not rewarded for the task by receiving a morsel of corned beef or a sardine, he did not care to work for the fun alone. In colours he had but little choice, unless it was something to eat, but he could distinguish them with ease if the shades were pronounced. I had no means of testing his taste for music or sense of musical sounds. I must here take occasion to mention one incident in the life of Moses that never perhaps occurred before in the life of any other chimpanzee, and while it may not be of scientific value, it is at least amusing. While living in the jungle, I received a letter enclosing a contract to be signed by myself and a witness. Having no means of finding a witness to sign the paper, I called Moses from the bushes, placed him at the table, gave him a pen and had him sign the document as witness. He did not write his name himself, as he had not yet mastered the art of writing, but he made his cross mark between the names, as many a good man had done before him. I wrote in the blank the name, _His_ "MOSES X NTYIGO" _mark_; the cross mark omitted, and had him with his own hand make the cross as it is legally done by all people who cannot write. With this signature the contract was returned in good faith to stand the test of the law courts of civilisation, and thus for the first time in the history of the race a chimpanzee signed his name.