_Can a Clergyman marry himself?_--If a clergyman were to perform the marriage service in his own case, would it be valid? Has such an occurrence ever been known? CONSTANT READER. _Ground Ice._--Has any satisfactory explanation been given of the mode in which the peculiar substance termed _ground ice_ is formed in certain rivers. I am most familiar with it as seen in the Wiltshire Avon. It is seen in some rivers in Lincolnshire, where I am told it is called _ground-gru_. One who has noticed it in the Teviot says, that the inhabitants there call it "sludge." The fact of ice being formed at the _bottom_ of streams, where we should expect a higher temperature, is so curious an anomaly, that it would be desirable to collect instances where and at what depths it is observed. J. C. E. _Astrologer-Royal._--I remember, in a former volume of "N. & Q.," some mention is made of Almanacks, Astrologers, &c. It escaped me at the time to tell you that the ancient office of King's Astrologer happens not to have been subjected to formal abolition, and, being hereditary, it is now vested in the person of Mr. Gadbury, resident at Bristol. He is auctioneer to the Court of Bankruptcy, and a very worthy man. He tells me there is neither salary nor privilege attached to his nominal post. B. B. Pembroke. _William, second Duke of Hamilton._--Can any of your numerous correspondents inform me if there is any monumental inscription, or other memorial, dedicated to the memory of William, second Duke of Hamilton, who expired on the 12th of September, 1651, from the effects of a wound received at the battle of Worcester on the 3rd of the same month? He was interred before the high altar in Worcester Cathedral, having died at the Commandery in that city; but there is neither "storied urn or animated bust" as a record of his sepulture within that venerable pile. In making an inspection of the Commandery, an old building, probably once belonging to the Knights Templars, I was gravely told, and my informant even showed me the very spot beneath the floor of one of the rooms, in which, as tradition points out, he is said to have been buried. J. B. WHITBORNE. _The Ring Finger._--Having observed various remarks on the ring finger in your last volume, I shall be much obliged if you can give me any information on the subject. As a lady of my acquaintance has had the misfortune to lose that finger, it has been said that she cannot be legally married in the Church of England in consequence, and had better, if ever solicited, cross the border to Scotland to make the marriage binding. A RING. _Bishop of London's Palace in Bishopsgate._--Historians agree that King Henry VII., on his arrival in London after the battle of Bosworth, took up his residence for a few days at the Bishop of London's palace, and Bacon tells us[4] this palace was in Bishopsgate Street. Can any of your readers inform me where it stood? J. G.