PREFACE. 



In the present edition a special effort has been made to 

 replace technical terms (other than scientific names), so far as 

 possible, by words in ordinary use. This, it is hoped, will 

 render the " Guide " more acceptable to the general reader, 

 while in no wise detracting from its usefulness to the more 

 scientific student. Like its predecessor, this edition has been 

 revised and brought up to date by Mr. E. Lydekker. 



E. EAY LANKESTEE. 



Beitish Musbdm (Natural History). 

 September, 1906. 



