CONTENTS {continued). 



December 19, 1889. 



PAGE 



I. Comparison of the Spectra of ."Nebulae and Stars of Groups I and II with 



those of Comets and Auroree. By J. Norman Lockyer, F.E.S. . . 28 



II. The Presence of Bright Carbon Flutings in the Spectra of Celestial Bodies. 



By J. Norman Lockyer, F.E.S 39 



III. Some Observations on the Amount of Luminous and Non-luminous Radia- 

 tion emitted by a G-as Flame. By Sir John Conroy, Bart., M.A. . 41 



IY. On the Effects of Pressure on the Magnetisation of Cobalt. By C. Chree, 



M.A., Fellow of King's College, Cambridge ... . . .41 



Y. On the Steam Calorimeter. By J. Jolt, M.A 45 



YI. On the Extension and Flexure of Cylindrical and Spherical Thin Elastic 



Shells. By A. B. Basset, M.A., F.E.S. . . . . . .45 



List of Presents . . . . . . 49 



Some Observations on the Amount of Luminous and Non- Luminous Eadiation 

 emitted by a Gas Flame. By Sir John Conroy, Bart., M.A., Bedford 

 Lecturer of Balliol College and Millard Lecturer of Trinity College, 

 Oxford ............. 55 



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