Jjjoung Collector Serie0.] 



LAND AND FRESH-WATER SHELLS: 



AN INTRODUCTION TO THE STUDY OF 

 CONCHOLOGY. 



BY 



J. W. WILLIAMS, M.R.C.S. (ENG.), F.L.S., F.R.M.S., 



Licentiate of the Royal College of Physicians of London and Fellow of the Anthropological 



Institute; Member of the Anatomical Society of Great Britain and Ireland 



and of the British Astronomical Association. 



WITH A CHAPTER ON THE 



DISTRIBUTION OF THE BRITISH LAND AND 

 FRESH-WATER MOLLUSC A, 



BY 



J. W. TAYLOR, F.L.S., 



Membre Honoraire de la Societe" Malacologique de France ; Author of "A Monograph ofth$ 

 Land and Fresh-water Mollusca of the British Isles " ; 



AND 



W. DENISON ROEBUCK, F.L.S. 



This Book is now published by 

 GEORGE ALLEN & UNWIN, LTD. 



Ruskin House, 



40, MUSEUM STREET, 

 LONDON, W.C. 



