216 CARBONIFEROUS LAMELLIBRANCHIATA. 



In conclusion, my thanks are clue, and most gratefully given, to the late Prof. 

 Wiltshire, Prof. Rupert Jones, and Dr. Smith Woodward, who have given much 

 valuable advice and assistance while this monograph has been passing through the 

 press ; also to Mrs. Smith Woodward for aid in preparing the indexes. 



I have also to acknowledge the kindest help from my friends and others whose 

 friendship I obtained during the time I was working at the monograph, without 

 whose kind assistance in lending specimens the work would have been impossible. 



I have to thank the authorities of the British Museum, the Directors of the 

 Geological Survey of Great Britain and Ireland, and the authorities of many pro- 

 vincial and foreign museums for permission to borrow or study specimens in their 

 possession; and specially by name I would mention Dr. Henry Woodward, Dr. Smith 

 Woodward, Mr. R. B. Newton, and Mr. E. A. Smith ; Prof. Traquair and Mr. Good- 

 child, Mr. Plunkett, Prof. Cole and Dr. Scharff, Prof. McKenny Hughes and Mr. 

 H. Woods, Prof. Boyd Dawkins, Mr. Hoyle, and Mr. Gill ; Prof. Carr, of Not- 

 tingham ; Prof. Dupont, of Brussels; Mr. Platnauer, of York; the late Dr. .J. 

 Young, of theHunterian Museum; Mr. E. T. Newton, Dr. Kitchin, Mr. McHenry, 

 Mr. Macconochie, Mr. Tait, and the late Mr. Bennie, of the Geological Survey. 



Amongst private collectors I beg to thank for loan of specimens Mr. Wright, of 

 Belfast ; Mr. J. Neilson, of Glasgow ; Mr. J. Smith, of Monkredding ; Mr. Law, of 

 Hipperholm ; Mr. Barnes and Mr. Holroyd, of Manchester ; Miss J. Donald ; Mr. 

 J. Dunn, of Redesdale; the Rev. Father Hildreth, S.J. ; Mr. J.Ward, of Longton; 

 Mr. J. T. Stobbs, of Stoke-on-Trent ; the late Mr. J. W. Kirkby ; Miss Birley ; 

 Prof. Garwood ; Sir Thos. Wardle, of Leek ; the late Mr. R. Craig, of Beith ; the 

 late Mr. G. H. Morton, of Liverpool; the late Sir J. Prestwich ; the late Mr. G. 

 Wild; the late Dr. John Young; and Mr. C. Davies Sherborn. 



