— LXXV — 



Communication made to the Eoyal Society by Professor Roscoe, S., « On the Absence of Potasàum 

 in Protagon prepared by Dr. Gamgee ». — Carnelley. Preliminary Note on the Existence of Ice and 

 other Bodies in the Solid State at Temperatures far above their ordinary Melting Points. — Rodwell. 

 On the Effects of Heat on the Chloride, Bromide, and Iodide of Silver, and on some Chlorobromiodides 

 of Silver. — Gore. Phenomena of the Capillary Electroscope. — Id. Electric Currents caused by Liquid 

 Diffusion and Osmose. — Bottomley. Additional Note to a Paper « On the Thermal Conductivity of 

 Water ». — Spoltiswoode. On the 48 Co-ordinates of a Cubie Curve in Space. — Holmgren. How do the 

 Colour-blind See the different Colours ? Introductory Reraarks. — Tyndall. Action of an Interraittent 

 Bearo of Eadiant Heat upon Gaseous Matter — Herschel. On Graviraeters, with special reference to the 

 Torsion-Gravimeter designed by the late J. Allan Broun. — Tribe. Experimental Researches into Electric 

 Distribution as manifested by that of the Radicles of Electrolytes. — Darwin. On the Tidal Friction of 

 a Planet attended by several Satellites, and on the Evolution of the Solar System. — Watson. On 

 the Female Organs and Placentation of the Racoon (Procyon lotor). — Walney. Purther Note on the 

 Minute Anatomy of the Thymus. — Gladslone. The Refraction Equivalents of Carbon , Hydrogen, 

 Oxygen, and Nitrogen in Organic Compounds. — Russell. On certain Definite Integrals. — Hulke. 

 Polacanthus Foxii, a large undescribed Dinosaur from the Wealden Formation in the Me of Wight. — 

 Schuster. On Harmonic Ratios in the Spectra of Gases. — Hopkinson. Dielectric Capacity of Liquids. — 

 Schàfer. Note on tbe Occurrence of Ganglion Cells in the Anterior Roots of the Cat's Spinai Nerves. — 

 Lockyer. On the Iron Lines widened in Solar Spots. — 210. Rerry Haycrafl. Upon the Cause of the 

 Striation of Voluutary Muscular Tissue. — Owen. Description of some Remains of the Gigantic 

 Land-lizard (Megalania prisca, Owen) from Australia. Part III. — Sione. On a Method of Destroying 

 the Effects of slight Errors of Adjustment in Experiments of Changes of Refrangibility due to Relative 

 Motions in the Line of Sight. — Ellis. On an Improved Bimodular Method of computing Naturai 

 and Tabular Logarithms and Anti-Logarithms to Twelve or Sixteen Places with very brief Tables. — 

 Id On the Potential Radix as a Means of Calculating Logarithms to any Required Number of Decimai 

 Places, with a Summary of ali Preceding Methods Chronologically Arranged. — Id. On the Influence 

 of Temperature on the Musical Pitch of Harmonium Reeds. — Abney. On the Influence of the 

 Molecular Grouping in Organic Bodies on their Absorption in the Infra-red Region of the Spectrum. — 

 Marcel. Experiments undertaken during the Surnmer, 1880, at Tvoire (1,230 feet), Courmayeur (3,9-15 feet), 

 and the « Col de Géant » (11,030 feet), on the Influence of Altitude on Respiration. — Ewing. On 

 a New Seismograph. — Grookes. On the Viscosity of Gases at High Exhaustions. — Slokes. Note on 

 the Reduction of Mr. Crookes's Experiments on the Decrement of the Are of Vibration of a Mica 

 Piate oscillating withinaBulb containing more or less rarefied Gas. — Pauli. Notes on the Earthquakes 

 ofJuly, 1880, at Manila. — Slokes. On a Simple Mode of Eliminating Errors of Adjustment in Delicate 

 Observations of Compared Spectra. — Haughton. Notes on Physical Geology. No. VII. On the Secular 

 Inequalities in Terrestdal Climates depeuding on the Perihelion Longitude and Eccentricity of the Earth's 

 Orbit. — Tyndall. Further Experiments on the Action of an Interraittent Beam of Radiant Heat on Gaseous 

 Matter. Thermometric Measurements. — 211. Conroy. Some Experiments on Metallic Reflexion. No. II. — 

 Thin. On the Trichophyton lonsurans (the Fungus of Ringworm). — Id. On Bacterium decaluans: 

 on Organism associated with the Destruction of the Hair in Alopecia areata. — Id. On the Absorption 

 of Pigment by Bacteria. — Hicks. On Toroidal Functions. — Royston-Pigctt. Microscopical Researches 

 in High Power Definition. Preliminary Note on the Beaded Villi of Lepidoptera-Scales as seen with 

 a Power of 3,000 Diameters. — Preece. On the Conversion of Radiant Energy into Sonorous Vi- 

 brations. — Hannay. On the Limit of the Liquid State. — Alkinson. On the Diastase of Kòji. — 

 Reinold. On the Electrical Resistance of Thin Liquid Films, with a Revision of Newton's Table of * 

 Colours. — Hughes. Molecular Electro-Magnetic Induction. — Williams. On the Action of Sodium 

 upon Chinoline. — 212. Romanes. Observations on the Locomotor System of Echinodermata. — Ferrier 

 and Yeo. The Functional Relations of the Motor Roots of the Brachial and Lumbo-Sacral Plexuses. — 

 Langley. On the Histology and Physioìogy of the Pepsin-forming Glands. — Rodwell. On the Coefficients 

 of Expansion of the Di-iodide of Lead, Pbl 2 , and of an Alloy of Iodide ofLead with Iodide of Silver, 

 PbI 2 AgI. — Hughes. Permanent Molecular Torsion of Conducting Wires produced by the Passage of an 

 Electric Current. — Dobson. On the Tendinous Intersection of the Digastric. — Roscoe. Note on 



