I slung the three batteries on a belt about my waist. This belt also carried a tube and my tuning apparatus, of a particularly selective type which I had designed on earth, and for which I now have a United States patent pending, unless my patent attorneys have abandoned it through want of word from me. I now adapted this design to an unusually short wave length, in order to comply with what I remembered to be the speculations of earth scientists on the method of insect communication. My tubes were of the Indestructo type invented by me on earth, or they never could have withstood my subsequent adventures. From a skull cap I suspended two earphones and a microphone, and on top of the cap I mounted a small pancake coil. The microphone gave me more trouble than any other part of the set, as carbon of the exact sort required seemed hard to get on Poros. But finally, after testing several hundred other materials, I hit upon a very common light silvery metal which did just as well. This metal I am unable to identify, but I think that it is one of the platinum group, more probably osmium. I spent four months of earth time in the laboratories of Mooni, growing more and more homesick for Wautoosa. If it had not been for the consoling assurances of the faithful Doggo, I do not believe that I could have stood it, so many were the interruptions to my work. Of all the diversions offered me, only one interested me at all, and that was the Zoo, or gr-ool—_i.e._, animal place—as they termed it. And the most amusing part of the gr-ool was the monkey house. Of course there are no monkeys on Poros, but I refer to this place as a monkey house, because that is what it would correspond to on earth. Here were kept specimens of all the wild species of ant known on the planet. Except in size and color, I could discover no features which would distinguish any of them from the ant-men. One day, seeing my interest, Doggo wrote down for me: “Some of the species are very intelligent, so much so that they were formerly bred in large quantities for slaves, before the treaty of Mooni supplied Formia with a superior substitute.” “Did it ever occur to anyone,” I asked, “that these creatures might be either immature or degenerate Formians?” He was horrified. “These wild ants,” he explained, “are the basis of one of the great intellectual disputes of this planet—namely, as to whether or not we are merely a superior species of ants, or whether we are an entirely distinct type of being, specially created, and not a part of the animal kingdom at all. “Most of the university men hold that we are related to these brutes, and this is likewise the more modern view. But fortunately there is an influential body of opinion, high in the politics of this country, which considers that such a view is too degrading to admit of acceptance. And accordingly the Council of Twelve is even now seriously considering a law intended to prohibit the teaching of this dangerous doctrine.”