This was a question giving an opportunity for considerable difference of opinion. It drew forth many intelligent answers, and gave a good deal of insight into individual taste. We give here the seven principal works named by way of answer, placing them in the order of frequency:—_The Arabian Night’s Entertainments_, _Don Quixote_ by Cervantes, _Gulliver’s Travels_ by Dean Swift, the _Divine Comedy_ of Dante, Spencer’s _Faerie Queen_, _The Pilgrim’s Progress_ of John Bunyan, and Milton’s _Paradise Lost_. =71. What Scottish sovereign, looking out of the window of the prison in which he was once confined, caught sight, for the first time, of the lady whom he afterwards married?= The captive monarch was James I. of Scotland. He had fallen into the hands of the English when, a youth fourteen years old, he was on his way by sea to France, and remained a prisoner for about eighteen years. One day he happened to be looking out of his window in the great tower of Windsor Castle, when Lady Jane Beaufort, the daughter of the Earl of Somerset, was walking in the garden below. The charms of her person, and the gentleness of her character won his heart, and they were married with great splendour shortly before James set out for the north to take up his crown. Lady Jane happened to be a cousin-german to Henry IV. of England, “and thus,” remarks John Hill Burton, the historian of Scotland, “romance found the very match which policy would have dictated.” =72. How many different kinds of clouds may be seen floating in the sky?= Few failed in this question, the answers going as a rule to show that an observer of cloudland, about a hundred years ago, classified the clouds, and proposed a series of names for them, since very generally accepted. He divided them into seven kinds; three being simple, and four intermediate or compound. The three simple forms are the Cirrus, the Cumulus, and the Stratus. The intermediate or compound forms derived from these three are the Cirro-cumulus, the Cirro-stratus, the Cumulo-stratus, and the Cumulo-cirro-stratus, the last named most often being called the Nimbus. [Illustration] [Illustration: ANSWERS TO CORRESPONDENTS.] MEDICAL.