NOTE ON THE ILLUSTRATIONS. 



All the figures in the plates have been drawn by Mr. 

 Wailes except those stated to be " after Brown " which are 

 original drawings by Mr. J. M. Brown ; those stated to be 

 "after Penard" are from published figures by Dr. Eugene 

 Penard. 



The figures in the text are reproduced direct from published 

 figures except fig. 173 which is from an original drawing by 

 Mr. Wailes, and figs. 165, 166, and 176 which have been 

 enlarged by Mr. Hopkinson from published figures. 



All the illustrations have been engraved by The Sun 

 Engraving Company (formerly Andre, Sleigh & Anglo), Ltd., 

 of London & Watford. 



