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CEYLON MARINE BIOLOGICAL REPORTS. 



Part VI.— January, 1912. 



Nos. 20 to 22. 



REPORT ON CERTAIN SCIENTIFIC WORK DONE ON THE 

 CEYLON PEARL BANKS DURING THE YEAR 191 L 



With three Plates and three Charts. 

 CONDUCTED BY THE CEYLON COMPANY OF PEARL FISHERS, LIMITED. 



BY 



T. Southwell, A.R.C.Sc. (Lond.), F.L.S., F.Z.S., 



Deputy Director of Fisheries for Bengal, 

 Late Scientific Adviser to the Ceylon Company of Pearl Fishers, Limited, and Inspector of Pearl Banks, 



AND 



Lieutenant J. C. Keb.vHam, R.N.R., 



Superintendent of Fisheries. 



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Qt o 1 m b : 

 PRINTED BY H. C. COTTLE. GOVERNMENT PRINTER, CEYLON. 



To be obtained at tlie Government Record Office, Colombo, Ceylon ; or from the Ceylon Company of 

 Pearl Fishers, Limited, U, Cornhill, London, E.C., iirice Rs. 2, or 2s. 8d. 



1912. 



