"We are shocked and amazed to see on your Earth so many of your young, healthy, robust, energetic young men who without pride or shame are engaged in many non-productive occupations as well as in some which are detrimental to the rest of you. Our youths, in fact all our workers, would indignantly spurn such employments. "Nor would any of our youths marry a young lady who did not put in her volunteer year as practical, probation, and aid nurse in our hospitals. "All these menial duties are done only by our young; these menial duties are not so unpleasant as you may think. With our improvements in automatic machinery, pumps, and vacuum cleaners, there is little direct handling. Sanitary gloves and breathing masks are worn when working at malodorous duties; thereby we are completely protected from dirt and contamination." All this conversation was certainly amazing to me. Finally, however, Xora returned to explaining the city's plan to me. "Let us go back to our city plan, I want to explain to you so that you will be able soon to get around by yourself and find your Earth friends. "This oval, which, as you know, we call the center, divides our city from north to south in half, with one part east of it, and the other part west of it. The street number system is similar to yours in part of New York. It is in Martian and not in your roman or arabic numbers. Communities along the center east start with No. 1, First Street. First Street begins at the most southern point near the ocean and runs north, and all the other streets are parallel to it. Buildings around the center are numbered, beginning at the southern end with No. 1, Center Street East and No. 1, Center Street West, and going northward on both sides. "I have another surprise for you. For the last thousand years, our forebears have anticipated that we would be able to carry off a number of Earth men to our planet. Whenever they started to travel in airplanes through the stratosphere. That is the reason we planned this city when it was recently constructed, in this simple pattern. When the Earth men came, we thought they could find their way about more easily. We do not need such careful marking places for we are like some of your animals, birds and fish. Your homing pigeon can find its home from long distances; so can your fish, and often your dog, cat, and horse. They have an acute development of the sense of direction, and so have we. From land, sea, or in the air, we can easily find our way and destination. When we are back home, you will no doubt receive letters from your friends with their addresses. Would you be able to find them now?" "Of course I could, quite easily, when I have mastered your number system; but if they live at distant points, I will have to travel. Will you at first take me until I can find my own way?"