of the animals.  Many have wondered what kind a magician he could have 

wondered what kind of a magician he could have been to so nearly divine he structure of these undreamed of monsters.  Undoubtedly the explanation   in the fact that few have realized the varied extent of the collections which were made under his  directions, for the discoveries of these reptiles is a fine illustration not of the law of correleation of    , that fiven one or more bones the comparation anatoinist can predict the forms of other parts of the animal, but the opposite law which applies to Dinosaurs and many other extinct animals, that    no matter how expert an anatomist he may be must see every bone of the body to know its form.  No man from one bone or a series of bones form any part of one of these Dinosaurs could tell the focus of those of any other parts.  Though the larger, anterior vertebrae of the tails of the largest Dinosaurs had been known for a long time, yet no scientist that the tail