Can any of your communicants favor me with the origin of this expression? It was employed to describe the late Revolution in Paris, by the "Examiner," and I have seen it as a quotation in a work of old date. Y. S. N. DENTAL SURGERY.--In the observations on the progress of Geography and Ethnology, by Mr. John Russell Bartlett, read at the Meeting of the New York Historical Society in November and December, 1846, it is mentioned that in the exploration of a tumuli carried on by Dr. M. W. Dickeson, in the South-western States, chiefly in Mississippi, although in some instances extending to Alabama, Louisiana, and Texas, he found that Dentistry had been extensively practised by this ancient people, as plugging the teeth and inserting artificial ones, were common. In one instance five artificial teeth were found inserted in one subject. T. C. B. CAPPING A STORY.--Rogers, the poet, was fond of telling the story of a gentleman who lost a shilling in Covent Garden Market, just at the corner of the Great Piazza, and on his return from India some five-and-twenty years afterwards, on passing the spot where he supposed the loss had taken place, remembered the circumstance, and looking about him on the pavement, picked up his shilling. Here Rogers, in his own inimitable way of telling a story, would pause, and then add--"IN HALFPENCE, _wrapped up in paper_." "I knew the man," said a witty friend to the poet, "but you have forgotten the most singular point of the story about the recovery of this lost shilling _just at the door of Willis the bookseller's place of business_." "I thought it sufficiently odd," replied the poetical banker, "our friend having found his shilling after so long a period, and only wish that my lost notes may turn up again in the same unexpected and amusing manner--_that notes turn up to me from Willis_." "Then you must have heard the whole story, and the very remarkable fact to which I refer? That in the paper which contained the four-and-twenty halfpence he found another filled with farthings, the exact amount of which when calculated, proved to be that of compound interest upon the shilling for five-and-twenty years one month and thirteen days." Mr. Rogers has never since told the story. ROBERT HOBLYN. SIR,--Through the medium of your publication, can you tell me anything about "Robt. Hoblyn;" and what works he has published? I believe they were of a classical nature; and he was living in 1825. Yours truly, A. K. Jan. 2, 1852.