Page 

 On the Volumes of Pedal Surfaces. By T. A. Hirst, Ph.D., F.R.S. 247 



On the Causes of various Phenomena of Attraction and Adhesion, as 

 exhibited in Solid Bodies, Films, Vesicles, Liquid Globules, and 

 Blood-Corpuscles. By Richard Norris . 251 



On Stasis of the Blood, and Exudation. By Richard Norris 258 



Additional Observations on the Proximate Principles of the Lichens. 

 By John Stenhouse, LL.D., F.R.S 263 



On the Theory of Parallels. By Lieut. -General T. Perronet Thomp- 

 son, F.R.S 268 



Letter to Professor Stokes, Sec. R.S., containing Observations made 

 at Malta on a Planetary Nebula. By William Lassell, F.R.S 269 



On the Fossil Remains of a long- tailed Bird (Archeopteryx macrurus, 

 Ow.) from the Lithographic Slate of Solenhofen. By Professor 

 Richard Owen, F.R.S 272 



Dynamical Problems regarding Elastic Spheroidal Shells and Sphe- 

 roids of Incompressible Liquid. By Professor William Thomson, 

 F.R.S 274 



On the Exact Form and Motion of Waves at and near the Surface of 

 Deep Water. By Professor W. J.MacquornRankine,C.E., F.R.S., &c. 275 



On the Tides of the Arctic Seas. Part II. The Semidiurnal Tides 

 of Port Leopold, North Somerset. By the Rev. Samuel Haughton, 

 M.A., F.R.S 278 



On the Action of Chloride of Iodine on Iodide of Ethylene and Pro- 

 pylene Gas. Second Notice. By Maxwell Simpson, M.B., F.R.S. 278 



On certain Developable Surfaces. By A. Cayley, F.R.S 279 



Anniversary Meeting : 



Report of Auditors , 281 



List of Fellows deceased, &c ib. 



elected since last Anniversary 282 



Address of the President ib. 



Presentation of the Medals 287 



Election of Council and Officers . . 298 



Changes and present state of the number of Fellows 299 



Financial Statements 300 & 301 



Observations on several Mineral Substances, including their Ana- 

 lysis, &c. By Dr. T. L. Phipson, F.C.S 302 



On the Strains in the Interior of Beams. By George Biddell Airy, 

 F.R.S., Astronomer Royal 304 



Photochemical Researches. Part V. On the Measurement of the 

 Chemical Action of Direct and Diffuse Sunlight. By R. W. 

 Bunsen, For. M.R.S., and H. E. Roscoe, B.A 306 



Notes of Researches on the Poly- Ammonias. No. XXI. On Par- 

 aniline. By A. W. Hofmann, LL.D., F.R.S 312 



