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CONTENTS 



Original Papers 



Page 

 Geology. — Titanium-bearing corundum spinellite' (rock emery). Thomas 

 L. Watson and George Steiger 665 



Oceanography. — An instrument for recording sea-water salinity, A. L. 

 Thijras .- 680 



Abstracts 

 Chemistri' 688 



Scientific Notes and New6 690 



Inbex 

 Author Index 693 



Subject Index 706 



