xx PREFACE TO NEW EDITION 



drawn for this book, and are based on the admirable restorations 

 by Miss Alice B. Woodward, seen in Plates XLIV., XLV., XLVI. 

 The latter have been kindly lent by Mr. H. E. Knipe, F.L.S., who 

 published them a few years ago in his beautifully illustrated 

 book Nebula, to Man. From the same book the writer has also 

 borrowed Plates XXIII. and XXVI., representing respectively 

 Iguanodon and Stegosaurus. 



As explained in the text, the fossil bones of the elephant's 

 ancestors have been discovered chiefly by Dr. C. W. Andrews of 

 the Natural History Museum, who has also been so fortunate 

 as to discover the skull and large portions of the skeleton of 

 that very strange Mammal, the Arsmoetherium, seen in Plate 

 XLIII. This also may be reckoned among the recent wonders 

 of Geology. 



The evolution of the horse, quite an old story now, has been 

 brought up to date and further illustrated by the outline 

 restorations taken from Mr. H. S. Lull, and by the Figs, on p. 245, 

 which have been carefully drawn from casts of skulls and limb- 

 bones in the Natural History Museum. 



In the last two chapters will be found an epitome of recent 

 information about the great Ground Sloth of South America, and 

 the Diprotodon, a huge Marsupial from Australia. 



The Trustees of the British Museum have kindly lent the 

 following : Figs. 29, 31, 32, 37, 50, 77, 84, 99, 100, 101, 102, 103. 



Dr. Henry Woodward, Editor of the Geological Magazine, 

 has kindly supplied Fig. 60 of the Polacanthus, as well as Plates 

 III., V., and LV. 



In conclusion, the writer wishes to thank Dr. A. Smith 

 Woodward, F.R.S., of the Natural History Museum, who, besides 

 reading the proofs of this book, has from time to time offered 

 suggestions and criticisms of sketches for which the writer is 



