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On tlie Constitution of Capryl Alcohol from Castor-oil. Bj C. Scliorlem- 

 mer 376 



Announcement of the intention of the Swedish Government to send out a 

 new Polar Expedition. In a Letter addressed to the President, by Prof. 

 A. E. Nordenskiold 381 



Further Observations on the Spectra of the Sun, and of some of the Stars 

 and Nebulae, with an attempt to determine therefrom whether these 

 Bodies are moving towards or from the Earth. By William Huggins, 

 F.RS 382 



On the Spectrum of Brorsen's Comet, 1868. By William Huggins, F.K.S. 386 



Memoir on " Undevelopable Uniquadric nomographics." By Martin Gar- 

 diner, C.E 389 



A Comparison of the Kew and Lisbon Magnetic Curves during the Mag- 

 netic Storm of February 20-25, 1866. By Senhor L Brito Capello, of 

 the Lisbon Observatory ; 399 



On Supersaturated Saline Solutions. By Charles Tomlinson, F.R.S 403 



On the Impact of Compressible Bodies, considered with reference to the 

 Theory of Pressure. By R. Moon, M.A., Honorciry Fellow of Queen's 

 College, Cambridge 411 



On the Tides of Bombay and Kurrachee. " By William Parkes, M. Inst. C .E. 414 



Observations of the Spectra of some of the Southern Nebulse. By Lieut, 

 John Herschel, R.E 416 



On the Combustion of Hydrogen and Carbonic Oxide in Oxygen under 

 great pressure. By E. Franldand, F.R.S, Professor of Chemistry in the 

 Royal Institution and in the Royal School of Mines 419 



On the Occlusion of Hydrogen Gas by Metals. By Thomas Graham, F.R.S., 

 Master of the Mint . . „ 422 



On the Osteology of the Solitaire orDidine Bird of the Island of Rodriguez, 

 FezojjJiajJS solitaria (Gmel.). By Alfred Newton, M.A., Professor of Zoo- 

 logy and Comparative Anatomy in the University^ of Cambridge, and 

 Edward Newton, M.A., Auditor- General of Mauritius 428 



Description of the great Melbourne Telescope. By the Rev. T. R. Robin- 

 son, D.D., F.R.S., and Thomas Grubb, F.R.S 434 



A Contribution to the Knowledge of Persulphide of Hydrogen. By A. W. 

 Hofmann, LL.D., F.R.S 437 



Note on the Anatomy of the Blood-vessel System of the Retina of the 

 Hedgehog. By J. W. Hiilke, F.R.S 439 



Researches on Refraction-Equivalents. By J. IT. Gladstone, Ph.D., F.R.S. 439 



A Third Memoir on Skew Surfaces, otherwise Scrolls. By Prof. Cayley, 



F.R.S 444 



Transformation of the Aromatic Monamines into Acids richer in Carbon. — 



IH. On Menaphtylamine. By A. W. Hofmann, LL.D., F.R.S 445 



Account of some recent Observations on Sun-spots, made at the Kew Ob- 

 servatory. By Warren De La Rue, F.R.S., Balfour Stewart, F.R.S., and 

 Benjamin Loewy, F.R.A.S 447 



