154 EXTINCT MONSTERS 



the original bone, so that for all practical purposes this model 

 is as good as the original. It seems a pity that there is no 

 room for it in the fossil reptile gallery, along with Cetiosaurus 

 and other allies. Both geologists and naturalists are hoping that 

 some day our Government will give a grant for the extension 

 of the British Museum (Natural History) in Cromwell Eoad, and 

 then we might have a spacious gallery entirely devoted to fossil 

 reptiles. Failing that, there is still a hope that some rich man 

 may come forward to supply the funds for this great improve- 

 ment. The material for this reconstruction, made under the 

 direction of Dr. W. J. Holland, director of the Carnegie Museum, 

 Pittsburgh, comes from four incomplete skeletons : One was found 

 by Dr. J. L. Wortman, in an expedition made in the year 1899, 

 another by Mr. 0. A. Peterson, in another expedition the follow- 

 ing year. Both specimens came from the same quarry, in Sheep 

 Creek, in Albany, County Wyoming, which had previously yielded 

 so much material to Dr. Wortman. Later on another two, or 

 more, turned up, each incomplete. No complete skull has yet 

 been found : Marsh had two incomplete skulls, and the Carnegie 

 Museum has another. The American Museum of Natural 

 History has two others (see Fig. 52) also incomplete. In these 

 circumstances a restoration had to be made from the material 

 at hand, and missing parts supplied by a study of the skull of 

 Brontosaurus, which is a near relation. This seems justifiable ; 

 and we may add that the tail, consisting of 70 vertebrae, has 

 been found complete : a large part of the trunk also. So, with 

 the neck, Diplodocus had a height of 14 feet, if it stood erect 

 as shown in Plate XXII. Professor Tornier, however, thinks the 

 legs were more or less bent. This view is partly expressed in our 

 restoration. The teeth are small and weak, probably serving to 

 collect succulent vegetation. The nostrils open quite in the top 



