Small replicas of these early attempts at restoring dinosaurs may still be seen in some of the older museums in this country and abroad.
[Illustration: Fig.

26 .-- SKELETON OF CAMPTOSAURUS, AN AMERICAN RELATIVE OF THE IGUANODON.] The real construction of the Iguanodon was gradually built up by later discoveries, and in 1877 an extraordinary find in a coal mine at Bernissart in Belgium brought to light no less than seventeen skeletons more or less complete.

These were found in an ancient fissure filled with rocks of Comanchic age, traversing the Carboniferous strata in which the coal seam lay, and with them were skeletons of other extinct reptiles of smaller size.

The open fissure had evidently served as a trap into which these ancient giants had fallen, and either killed by the fall or unable to escape from the pit, their remains had been subsequently covered up by sediments and the pit filled in to remain sealed up until the present day.

These skeletons, unique in their occurrence and manner of discovery, are the pride of the Brussels Museum of Natural History, and, together with the earlier discoveries, have made the _Iguanodon_ the most familiar type of dinosaur to the people of England and Western Europe.
[Illustration: Fig.