VI 



An Account of some recent Researches near Cairo, &c. By Leonard 

 Homer, Esq. Part First (concluded) page 233 



On the Computation of the Effect of the Attraction of Mountain- 

 masses, as disturbing the apparent astronomical latitude of stations 

 in Geodetic Surveys. By George B. Airy, Esq., F.R.S., Astro- 

 nomer Royal 240 



Note to a paper entitled " Contributions to the Anatomy of the Bra- 

 chiopoda," read June 15, 1854. By Thomas H. Huxley, Esq., F.R.S. 241 



On the Temperature and Density of the Seas between Southampton 

 and Bombay via the Mediterranean and Red Seas. By MM. 

 Adolphe, Hermann, and Robert Schlagintweit 242 



On the Structure, Functions, and Homology of the Manducatory 

 Organs in the Class Rotifera. By P. H. Gosse, Esq 245 



Address of the President 248 



Obituary Notices of Deceased Fellows: 



Professor Edward Forbes 263 



Rear Admiral Sir John Franklin 270 



Captain F. R. M. Crozier, R.N 275 



Professor Jameson 2/6' 



George Newport, Esq 278 



Nathaniel Wallich, M.D 285 



On the Structure, Functions, and Homology of the Manducatory 

 Organs in the Class Rotifera. By P. H. Gosse, Esq. (concluded) 292 



On the Perihelia and Nodes of the Planets. By Edward J. Cooper, 

 Esq., F.R.S .' 295 



On Circumstances modifying the Action of Chemical Affinity. By 

 J. H. Gladstone, Ph.D.', F.R.S 298 



Researches on Organo-metallic Bodies. By E. Frankland, Ph.D., 

 F.R.S. Second memoir 303 



Note on the Magnetic Medium. By Prof. A. W. Williamson 306 



Further Observations on the Anatomy of Macgillivraya, Cheletropis, 

 and allied genera of pelagic Gasteropoda. By John Denis Mac- 

 donald, Esq., R.N 309 



On the Anatomy of Nautilus umbilicatus, compared with that of 

 Nautilus Pompilius. By John Denis Macdonald, Esq., R.N 311 



On a Class of Differential Equations, including those which occur in 

 Dynamical Problems. Part II. By W. F. Donkin, M.A., F.R.S., 

 F.R.A.S 314 



Extract of a Letter, dated January 6, 1855, from J. Mitchell, Esq., 

 Quartermaster of Artillery, Bangalore, " On the Influence of Local 

 Altitude on the Burning "of the Fuses of Shells" 316 



On the existence of an element of Strength in beams subjected to 

 Transverse Strain, arising from the Lateral Action of the fibres or 

 particles on each other, and named by the author the ' Resistance 

 to Flexure.' By William Henry Barlow, Esq., F.R.S 319 



On the Metallic and some other Oxides, in relation to Catalytic Phe- 

 nomena. By the Rev J. Eyre Ashby 322 



Ocular Spectres and Structures as Mutual Exponents. By James 

 Jago, A.B. Cantab., M.B. Oxon 326 



