THE wonderful discovery of remains of Iguanodons made at Bernissart in 1878 caused quite a sensation amongst naturalists at the time, and the publication of the scientific results of that grand find have been awaited ever since with eager expectation. Nevertheless? as five years have elapsed since the discovery was announced, it is well that the memory should be refreshed by a few brief details as to the circumstances of the find itself before the results as to the nature of the Iguanodons themselves, lately made public, are referred to. Bernissart is in Belgium, situate between Mons and Tournai, close to the French frontier. In the spring of 1878, in one of the galleries of a coal mine there, were discovered in Wealden clays a large number of bones. Specimens of these bones were forwarded to Professor P. J. van Beneden, who at once recognised them as belonging to Iguanodon.