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 Road, 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. O. 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 vertebra, 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 
