"Some of the most interesting stories of the 'Arabian Nights' Entertainments' are laid in Cairo, and the reader of those anecdotes will learn from them a great deal of the manners of the times when they were written. We are told that the translation by Edward William Lane is the best. Lane was an Englishman, who was a long time in Cairo. He learned the language of the people, wore their dress, and lived among them, and he wrote a book called 'The Modern Egyptians,' which describes the manners and customs of the inhabitants of Cairo better than any other work. When we are in doubt concerning anything, we shall consult 'The Modern Egyptians' for what we want. Lane's translation of the 'Arabian Nights' occupied several years of his time, and was mostly made while he lived in Cairo. We have read some of these stories, and find them very interesting, and often envy Aladdin, with his wonderful lamp and his magic couch, and would very much like to sit down with Sinbad the Sailor and listen to the account of his adventures. [Illustration: PART OF OLD CAIRO.] "There are so many things in Cairo which we want to see that we will not try to make out a list in advance. We have engaged a guide to show us around, and shall trust to him for a day or two. At the end of that time we hope to know something about the city, and be able to go around alone." Every evening, while the boys were in Cairo, was devoted to the journal of their experiences during the day. They have allowed us to copy from it, and we can thus find out where they went and what they did. As there were so many things to describe the labor was divided, and while Frank was busy over one thing, Fred occupied himself with another. Let us see what they did: "It is the custom to ride on donkeys when going about Cairo, as many of the streets are so narrow that you cannot pass through them with carriages. We had the best we could secure, and very nice they were under the saddle, but we soon learned that it required some skill to ride them. The guide rode ahead, and we noticed that he did not put his feet in the stirrups as we did; while we were wondering the meaning of it, Frank's donkey stumbled and fell forward, and Frank went sprawling in the dust over the animal's head. "We all laughed (Frank did not laugh quite as loud as the rest, but he did the best he could), and so did the people in the street where the accident happened. Frank was up in an instant, and so was the donkey; and when we were off again the guide said that the donkey had a habit of stumbling and going down in a heap. If you have your feet in the stirrups when he goes down, you can't help being thrown over the animal's head; but if you ride as the guide does, your feet come on the ground when the donkey falls, and you walk gracefully forward a few steps till the boy brings your animal up for you to mount again. "We immediately began learning to ride with our feet free, and an hour's practice made us all right.