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\tTHE CRITICAL CONSTANTS AND ORTHOBARIC DENSITIES OF XENON. 



\ By Hubert Sutton Patterson, B.Sc, Richard Stafford Criits, and Robert Whytlaw-Gray 



ON THE OBSERVED VARIATIONS IN THE TEMPERATURE Co- 

 efficients OF A PRECISION BALANCE. By J. J. Manley, Hon. M.A. Oxon., Daubeny Curator, 



Magdalen College, Oxford 



THE GENERAL THEORY OF COLLOIDAL SOLUTIONS. By W. B. Hardy, 

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THE TENSION OF COMPOSITE FLUID SURFACES AND THE 



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