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Page 



NOTES ON OBSERVATIONS OF SUN AND STARS IN SOME BRITISH 



STONE CIRCLES-. FOURTH NOTE.— THE BOTALLEK CIRCLES, ST. JUST, CORNWALL. 



By Sir Norman Lockyer, Sc.D., K.C.B., F.R.S., Director Solar Physics Observatory 96 



ON THE PASSAGE OF RONTGEN RAYS THROUGH GASES AND 



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the Royal Society ' 105 



ON THE VELOCITY OF THE CATHODE RAYS EJECTED BY SUBSTANCES 



EXPOSED TO THE ■y-RAYS OK RADIUM. By R. D. Kleeman, B.A., B.Sc, 1851 Exhibition 

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 Cambridge .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 128 



ELECTROLYTES AND COLLOIDS.— THE PHYSICAL STATE OF GLUTEN. 



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DETERMINATION OF THE SURFACE-TENSION OF WATER BY THE 



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THE ORIGIN OF OSMOTIC EFFECTS. II.— DIFFERENTIAL SEPTA. 



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