696 POPULAR SCIENCE MONTHLY. 



Working very carefully, lie extracted two enormous pieces of 

 bone thickly coated with iron oxide the distal ends of the fibula 

 and tibia of some very large animal. Examining his find on the 

 way home, he noticed a clean fracture, as if a spur had been 

 broken from the bottom of the tibia, indicating a novel form. He 

 returned to the bluff and extracted the missing piece. This bone 

 was examined by Marsh and Cope, and figured by Cope and de- 

 scribed by him as Ornithotarsus imvianis, or "immense bird- 

 ankled beast." The face of this ankle joint was thirteen inches 

 and three quarters in the longer diameter ; and the bones indi- 

 cated an animal with long hind feet, like those of a bird, and 

 short fore feet, that could stand up and browse upon the high 

 trees of the forests in which it lived. Cope estimated the length 

 of its hind legs at twelve feet. 



Mr. B. Waterhouse Hawkins, an English artist skilled in the 

 restoration of fossil forms, had come to this country and made 

 some restorations of ancient gigantic animals the Hadrosaurus, 

 for instance, at the Academy of Sciences in Philadelphia, and at 

 Princeton College. As he had made restorations of extinct Eng- 

 lish reptiles for a public park in England, it was thought that a 

 good educational effect would result if a series of restorations of 

 the so much grander extinct reptiles of the Cretaceous period of 

 New Jersey could be set up in Central Park, and this gentleman 

 was accordingly engaged for the project. He had a studio in 

 New York city, where Prof. Lockwood visited him at his work. 

 The artist's plan was, first to reconstruct the entire skeleton from 

 the fossil bones, then to habilitate it in flesh by molding the clay 

 upon it, so that the animal really had a true skeleton inside. Mr. 

 Hawkins had already set up a Hadrosaurus when Mr. Lockwood 

 called, but the visitor noticed that there was a break in the 

 fibula. In answer to an inquiry about this omission, he was told 

 that the beast had a singular articulation of this joint for which 

 the fossil bones gave no data, and the artist had been unable to 

 invent it. Mr. Lockwood modestly said to the artist : 



" Why, I can articulate that for you." 



Mr. Hawkins was incredulous, and saems to have continued so 

 even after Mr. Lockwood told him he had the articulation at his 

 house. Returning home, Mr. Lockwood made drawings of the 

 part, the receipt of which set the English artist "crazy," as he 

 expressed himself in a letter asking the loan of the bones. With 

 their aid the difficulty was solved. Mr. Lockwood was afterward 

 asked to sell the bones, to be given to the British Museum, but 

 he preferred to keep them for America. 



This incident was followed by a very curious psychological ex- 

 perience. Mr. Lockwood received from Mr. Hawkins an original 

 cartoon of the Cretaceous dinosaurs, accompanied by a letter ask- 



