iii 1 



CONTENTS OF PART I. 



PEAKL OYSTER REPORT. 



Page 



Preface v 



Introduction 1 



Narrative, with Outline of the Investigations, and details of the Stations where 



Observations were made 17 



Description of the Pearl Banks of the Gulf of Manaar 99 



Observations on the Sea around Ceylon 122 



Observations and Experiments on the Life-History and Habits of the Pearl 



Oyster 125 



SUPPLEMENTARY REPORTS. 



I. On the Sea-Bottoms and Calcretes. By Joseph Lomas, F.G.S. (One Tlate) 147 



II. The Marine Alg.e, with a Note on the Fructification of Halimeda. By 



Ethel Barton (Mrs. A. Gepp) 163 



III. On the Gephyrea. By A. E. Shipley, M.A. (One Plate) 169 



IV. On the Polyplacophora. By E. R. Sykes, B.A., F.L.S. (One Plate) ... 177 



V. On the Holothurioidea. By Joseph Pearson, B.Se. (Three riates) ... 181 



VI. On the Cephalochorda. By Walter M. Tattersall, B.Sc. (One Plate). . 209 



VII. On the Copepoda. By Isaac C. Thompson, F.L.S.,and Andrew Scott, A.L.S. 



(Twentv Plates) 227 



a z 



