PREFACE. Vll 



E. A. Butler, Herr Brischke, of Dantzig, and the 

 late Fredk. Smith, of the British Museum. To 

 Mr. J. E. Fletcher, of Worcester, I am much obliged 

 for the great trouble he has taken in procuring me 

 Iarva3 for figuring ; Mr. W. F. Kirby, of the British 

 Museum, has given me bibliographical information 

 which I could not obtain here from the absence of 

 libraries ; while I have to thank the Secretary of the 

 Kay Society, the Rev. Professor Thomas Wiltshire, 

 F.L.S., Professor Rupert Jones, F.R.S., and Mr. J. J. 

 Weir, F.L.S., for revising the proofs. 



GLASGOW; 



July, 1882. 



