DURING the eighteen years that have elapsed since the publication of the 'Essay on the Ancient Topography of Jerusalem: a considerable amount of accurate information has been collected, bearing on the questions therein discussed. This would be sufficient, under ordinary circumstances, to justify a second edition of the work; but there are several reasons why this should hardly yet be attempted. First--There is a survey now in progress at Jerusalem, which will rectify our knowledge of the topography to a very considerable extent, but, though completed on the spot, it will not be published and...