On account of the peculiar circumstances by which this dream was occasioned, it deserves the following short analysis. "On the preceding evening," says professor Maas, "I was visited by a friend with whom I had a lively conversation, upon Joseph IInd's suppression of monasteries and convents. With this idea, though I did not become conscious of it in my dream, was associated the visit which the Pope publicly paid the Emperor Joseph at Vienna, in consequence of the measures taken against the clergy; and with this again was combined, however faintly, the representation of the visit, which had been paid me by my friend. These two events were, by the subreasoning faculty, compounded into one, according to the established rule--that things which agree in their parts, also correspond as to the whole;--hence the Pope's visit, was changed into a visit made to me. The subreasoning faculty then, in order to account for this extraordinary visit, fixed upon that which was the most important object in my room, namely, the desk, or rather the papers contained in it. That a diamond fell out of the triple crown was a collateral association, which was owing merely to the representation of the desk. Some days before when opening the desk, I had broken the glass of my watch, which I held in my hand, and the fragments fell among the papers. Hence no farther attention was paid to the diamond, being a representation of a collateral series of things. But afterwards the representation of the sparkling stones was again excited, and became the prevailing idea; hence it determined the succeeding association. On account of its similarity, it excited, the representation of fire, with which it was confounded; hence arose fire and smoke.--But, in the event, the writings only were burnt, not the desk itself; to which, being of comparatively less value, the attention was not at all directed." It is farther observable, that there are in the human mind certain obscure representations, and that it is necessary to be convinced of the reality of these images, if we are desirous of perceiving the connexion, which subsists among the operations of the imagination. Of the numerous phenomena, founded on obscure ideas, and which consequently prove their existence, we shall only remark the following. It is a well known fact, that many dreams originate in the impressions made in the body during sleep; and they consist of analogous images or such as are associated with sensations that would arise from these impressions, during a waking state. Hence, for instance, if our legs are placed in a perpendicular posture, we are often terrified by a dream that implies the imminent danger of falling from a steep rock or precipice. The mind must represent to itself these external impressions in a lively manner, otherwise no ideal picture could be thus excited; but, as we do not become at all conscious of them, they are but faintly and obscurely represented.