_Note_.--The _remedies_ are an allowance of one sixth of a carat, or forty grains, in the pound weight of gold, and of two pennyweights in that of silver, considered either as to fineness or weight, or both of them taken together; the moneyers are, however, at this time so expert, that these quantities are much greater than are necessary. * * * * * SPIRIT OF DISCOVERY _Society of Civil Engineers_. A charter of incorporation has just received the royal signature, constituting an institution of Civil Engineers, and naming Mr. Telford its president. The objects of such institution, as recited in the charter, are, "The general advancement of mechanical science, and more particularly for promoting the acquisition of that species of knowledge which constitutes the profession of a civil engineer; being the art of directing the great sources of power in nature for the use and convenience of man, as the means of production and of traffic in states, both for external and internal trade, as applied in the construction of roads, bridges, aqueducts, canals, river navigation, and docks, for internal intercourse and exchange; and in the construction of ports, harbours, moles, breakwaters, and light-houses, and in the art of navigation by artificial power, for the purposes of commerce; and in the construction and adaptation of machinery, and in the drainage of cities and towns." _Toads as Ant-eaters_. In the autumn of last year, a pit, wherein I grew melons, was so much infested with ants, as to threaten the destruction of the whole crop; which they did, first by perforating the skin, and afterwards eating their way into the fruit; and, after making several unsuccessful experiments to destroy them, it occurred to me that I had seen the toad feed on them. I accordingly put about half a dozen toads into the pit, and, in the course of a few days, scarcely an ant was to be found.--_Corresp. Gard. Mag._ _Laying out Part of the Calton Hill as Pleasure-Ground_. We observe with pleasure plans advertised for in the Edinburgh newspapers, for this purpose. There is no city in Britain which presents greater facilities for public walks and gardens than Edinburgh, notwithstanding the immense injury which it has sustained in a picturesque point of view by the earthen mound, and the mean buildings which cover great part of the bottom and sides of the valley of the North Loch. That valley ought to have been laid out in terraces, some open, or covered with glazed verandas, for winter use, and others shaded by trees for summer walking. The great art in laying out walks for recreation and ease on sloping surfaces, is so to direct them as not to render them more fatiguing than straight walks on level ground. But the grand subject of improvement at Edinburgh, in the way of planting in the public walks, is the hill of Arthur's Seat, which, planted and built on, might be rendered one of the most unique scenes in Europe.--_Gard. Mag._