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Contents of PROCEEDINGS, No. A 56i. January, 1910. 



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Page 

 149 



171 

 177 



ON THE REFRACTION AND DISPERSION OF NEON. l!y CnvE 



CuTin.F.UTsi'N .ind M at lo: ( 'u i hi.kk i so.s _ _ ;A ' 



ON THE REFRACTION AND DISPERSION OF AIR, OXYGEN, NITROGEN, 



AND llVDRfXll'.N. AND THl'.IK R MLAI'IONS. Bv (r.n i; (in iiiii:n rsos and Maude ^ liON 151 



ON THE REFRACTION AND DISPERSION OF SULPHUR DIOXIDE AND 



iivt)UO(;kn sui.Piiim;, and i iii.ik kkla tion to i hosk ok tiikir c:onsi tiukn i's. 



By Cmvi; C:u j iriiER rso.N and Maudk CirniMici; rsox .. .. .. .. v. ^ ^ 



ON THE NATURE OF THE HYDROGfiN FLOCCULI AND THEIR 



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a PAK I l( l.l:. Ily R. II. Kl DK.IAN, D.S, ., P,.A „ ..AV-.,V^,,';,r-r^' 



THE CRYSTALLINE STRUCTURE OF IRON AT HIGH TEMPERATURES. 



By Wai ii.u RosKMiAiN, ll.A., D.S,: . ami J. ('. W. IIUMI i(i;v, 1!.A.. M.S.;. (Plalc2) .. .. ZOO 



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 THE RELATION OF THALLIUM TO THE ALKALI METALS: A STUDY 



(IK rilAI.I.IUMZINC sri.Pll.XlK ANh SELKNATK. Ily A. I':. H. Jut ^o^^M.A.. D.Sc, FR;^;- 211 



A CRITICAL STUDY OF SPECTRAL SERIES. PART I. — THE 



ALKALIES, II AND Mr. liy W. M. liicKs, K.R.S. (Abstract) "8 



SOI-I) l!Y lIARklSON & SONS, 4,=;. ST. MARTIN'S LANE, W.C. 



