Contents. vii 



A Series of Optically Active Nitrogen Compounds containing the Allyl 



Group. By Miss M. B. Thomas and H. 0. Jones 

 The Effect of Hydrogen on the Discharge of Electricity from Hot Platinum 



By 0. W. Richardson 



Experiments on the Retention of an Electric Charge by Cases. By 



W. A. Douglas Rudge 



Polarization phenomena in the Eclipse 1905 August 30. By H. F 



Newall 



The Effect of the Lunar Deflection of the Vertical on Latitude Observa 



tions. By B. Cookson 



Suggestio7is for a theory of the Milky Way and the Clouds of Magellan, 



By Arthur R. Hinks 



Preliminary Communication on the Life-History of Pleistophora peri 



planetae, Lutz and Splendore. By W. S. Perrin 

 Contributions to the Knowledge of the Tetrazoline Group. By S. Ruhemann 



and R. W. Merriman 



Some Experiments on Kanal-Strahlen. By Professor J. J. Thomson 



On the Inheritance of Coat-colour in Rats. By L. Doncaster . 



On the Osmotic Pressure of Dilute Aqueous Solutions. Py P. S. Barlow 229 



The Expansion of a Gas into a Vacuum and the Determination of the 



Specific Heat at Constant Pressure for Gases. By G F. C. Searle 

 A Novel Instrument for Illustrating the Magnetic Properties of Iron 



(With Plate III.) By A. H. Peake 



On the Action of Radium and other Salts on Gelatin. By W. A 



Douglas Rudge 



Siosceptibility of Iron in Colloidal Solution. By E. F. Burton and 



P. Phillips. (Communicated by Prof. J. J. Thomson) . . . 260 

 A Method of following the Course of certain Chemical Actions, and a 



Period of Induction in the Action of Excess of Water on Mono- 



chloracetic Acid. By P. V. Bevan 269 



The Radio-activity of Metals and their Salts. By Norman R. Campbell 282 

 On a Relation between the Velocity and the Volume of the Ions of certain 

 -^faganic Acids and Bases. By T. H. Laby and G. A. Carse 



(Communicated by Prof. J. J. Thomson) .... 

 On the Reduction of the General Ternary Quintic to Hilbert's Canonical 



Form. By H. W. Richmond 



An Indicator for Strong Acids and Bases. By H. J. H. Fenton . 

 Notes on Cycads: with Exhibition of a Rare Species (Cycas Micholitzii) 



acquired by the Botanic Garden. By A. C. Seward 

 Experiments on the Hybridisation of Barleys. By R. H. Biffen . 

 .1 I'reli in i im ry .Vote on the Maiotic Phenomena in the Eggs of the Her- 

 maphrodite " Angiostom/wm nigrovenosum" (" A scar is nigrovenosa") 



(AYith Plate IV.) By S. A. M c Dowall 



The Action of Acidckloridea of Acetyl* rnic Adds on R 'etonic Compounds 



By S. Ruhemann 313 



190 



192 



194 



197 



198 



201 



204 



209 

 212 

 215 



241 

 250 



258 



288 



296 



298 



300 

 304 



309 



