117. _Cornish Arms and Cornish Motto._--The Cornish arms are a field sable with fifteen _bezants_, not _balls_ as they are commonly called, 5. 4. 3. 2. 1. in pale _or_. These arms were borne by Condurus, the last Earl of Cornwall of British blood, in the time of William I., and were so borne until Richard, Earl of Cornwall, on being created Earl of Poictou, took the arms of such. According to the custom of the French, these were a rampant lion _gules_ crowned _or_, in a field _argent_; but to show forth Cornwall, he threw the fifteen _bezants_ into a bordour _sable_, round the bearing of the Earl of Poictou; but the Cornish arms, those of Condurus, are unaltered, though the _coins_ are often mistaken for balls, and painted on a field coloured to the painter's fancy. Can you tell me when the Cornish motto "one and all" was adopted, and why? S. H. (2) 118. _Gloucester saved from the King's Mines._--In Sir Kenelm Digby's _Treatise of Bodies_, ch. xxviii. sec. 4., is this passage: "The trampling of men and horses in a quiet night, will be heard some miles off.... Most of all if one set a drum smooth upon the ground, and lay one's ear to the upper edge of it," &c. On which the copy in my possession (ed. 1669) has the following marginal note in a cotemporary hand: "Thus Gloucester was saved from the King's mines by y'e drum of a drunken dru̅mer." To what event does this refer, and where shall I find an account of it? It evidently happened during the civil wars, but Clarendon has no mention of it. T. H. KERSLEY, A.B. 119. _Milesian._--What is the origin of the term _Milesian_ as applied to certain races among the Irish? W. FRASER. 120. _Horology._--Can any of your numerous correspondents kindly inform me what is the best scientific work on Horology? I do not want one containing _mere_ mathematical work, but entering into all the details of the various movements, escapements, &c. &c. of astronomical clocks, chronometers, pocket watches, with the latest improvements down to the present time. H. C. K. 121. _Laurentius Müller._--Can any of your readers mention a library which contains a copy of the _Historia Septentrionalis_, or History of Poland, of Laurentius Müller, published about 1580? A. TR. 122. _Lines on a Bed._--Can you tell me where I can find the antecedents of the following couplets? They are a portion of some exquisite poetical "Lines on a Bed:" "To-day thy bosom may contain Exulting pleasure's fleeting train, Desponding grief to-morrow!" I once thought they were Prior's, but I cannot find them. Can you assist me? R. W. B.