Cicero furnishes us with a story of two Arcadians, who, travelling together, arrived at Megara, a city of Greece, between Athens and Corinth, where one of them lodged in a friend's house, and the other at an inn. After supper, the person who lodged at the private house went to bed, and falling asleep, dreamed that his friend at the inn appeared to him and begged his assistance, because the innkeeper was going to kill him. The man immediately got out of bed much frightened at the dream; but recovering himself, and falling asleep again, his friend appeared to him a second time, and desired that, as he would not assist him in time, he would take care at least not to let his death go unpunished; that the innkeeper having murdered him had thrown his body into a cart and covered it with dung; he therefore begged that he would be at the city gate in the morning, before the cart was out; struck with this new dream, he went early to the gate, saw the cart, and asked the driver what was in it; the driver immediately fled, the dead body was taken out of the cart, and the innkeeper apprehended and executed. It is very frequently observed, that in a dream a series of representations is suddenly interrupted, and another series of a very different kind occupies its place. This happens as soon as an idea associates itself; which, from whatever cause, is more interesting than that immediately preceding. The last then becomes the prevailing one, and determines the association. Yet, by this too, the imagination is frequently reconducted to the former series. The interruption in the course of the preceding occurrences is remarked, and the power of abstracting similarities is in search of the cause of this irregularity. Hence, in such cases, there usually happens some unfortunate event or other, which occasions the interruption of the story. The representing power may again suddenly conduct us to another series of ideas, and thus the imagination may be led by the subreasoning power before defined, from one scene to another. Of this kind, for instance, is the following remarkable dream, as related and explained in the works of professor Maas of Halle: "I dreamed once," says he "that the Pope visited me. He commanded me to open my desk, and carefully examined all the papers it contained. While he was thus employed, a very sparkling diamond fell out of his triple crown into my desk, of which, however, neither of us took any notice. As soon as the Pope had withdrawn, I retired to bed, but was soon obliged to rise, on account of a thick smoke, the cause of which I had yet to learn. Upon examination I discovered, that the diamond had set fire to the papers in my desk, and burnt them to ashes."