A clock was purchased by Queen Victoria at Strawberry Hill sale and is now at Windsor, which was a present from Henry VIII. to Anne Boleyn, and since from Lady Elizabeth Germains to Horace Walpole. It is described by Walpole as a clock of silver gilt, richly chased, engraved and ornamented with fleurs-de-lys, little heads, &c. On the top sits a lion holding the arms of England, which are also on the sides. On the weights are the initial letters of Henry and Anne within true lover's knots, at the top 'Dieu et mon droit,' at the bottom 'the most happy.' The emperor Charles V. (Henry's contemporary) was so much pleased with observing the movements of time-pieces, that it is related of him, that he frequently sat after his dinner with a number of them upon the table before him, and that even after his retirement to the monastery of St Just he still continued his interest in them. He endeavoured to adjust their movements and keep them in order, but, upon finding it impossible to make any two watches agree with each other in keeping time, he was induced to reflect how much more absurd it must be for a man to attempt to regulate the more varied and hidden emotions of nations in consonance with those in his own breast. Ancient watches used to strike the time, and we read of Charles V. and Louis XI. that, watches having been stolen from them in certain crowds, the thief was detected by their striking the hour. In 1577 Moestlin had a clock so constructed as to make just 2528 beats in an hour, 146 of which were counted during the sun's passage over a meridian, and thus determined its diameter. The alarum or alarm is one of the earliest additions to the mechanism of the clock, and is still used in Dutch clocks. This contrivance took its origin from the circumstance of prayers being read at stated periods in monasteries by night as well as by day, such an invention being of course of much service in arousing the priest to perform his duties.