VI 



Page 



On the Correlation of Intellectual Ability with the Size and Shape of 

 the Head. (Preliminary Notice.) Drawn up by Karl Pearson, 

 F.R.S., University College, London 333 



The Affinity of Tniesipteris with the Sphenophyllales. By A. P. W. 

 Thomas, M.A., F.L.S., University College, Auckland, New Zealand. 

 Communicated by Professor G. B. Howes, F.R.S 343 



On the Excretory Organs of Amphioxua. By Edwin S. Goodrich, M.A., 

 Fellow of Merton College, Oxford. Communicated by E. Bay Lan< 

 kester, F.R.S 350 



On the Causation of the so-called " Peripheral Beflex Secretion " of the 

 Pancreas. (Preliminary Communication.) By "W. M. Bayliss, M.D., 

 and Ernest H. Starling, M.D., F.B.S 352 



Meeting of January 30, 1902, and List of Papers read 353 



The Chemical Origins of the Lines in Nova Persei. By Sir Norman 

 Lockyer, K.C.B., F.R.S 354 



The Specific Volumes of Oxygen and Nitrogen Vapour at the Boiling- 

 point of Oxygen. By James Dewar, M.A., D.Sc., LL.D., F.B.S 360 



A Short Description of the Culicidse of India, with Descriptions of New 

 Species of Anopheles. By Fred. V. Theobald, M.A., F.E.S. Com- 

 municated by E. Ray Lankester, F.R.S. (Plate 5.) 367 



The Application of the Kinetic Theory of Gases to the Electric, 

 Magnetic, and Optical Properties of Diatomic Gases. By George W. 

 Walker. Communicated by Professor Riicker, Sec. R.S 394 



No. 457. 



Meeting of February 6, 1902, and List of Papers read 398 



The Stratifications of Hydrogen. By Sir William Crookes, F.R.S 399 



Radio-activity and the Electron Theory. By Sir William Crookes, 

 F.R.S 413 



The Density and Coefficient of Cubical Expansion of Ice. By J. H. 

 Vincent, D.Sc., B.A., St. John's College, Cambridge. Communicated 

 by Professor J. J. Thomson, F.R.S 422 



Meeting of February 13, 1902, and List of Papers read 425 



On the Sub-Mechanics of the Universe. By Osborne Reynolds, F.R.S. 425 



Micro-crystalline Structure of Platinum. By Thomas Andrews, F.R.S., 

 F.C.S. (Plate 6.) 433 



The Distribution of Magnetism as affected by Induced Currents in an 

 Iron Cylinder when Rotated in a Magnetic Field. By Ernest 

 Wilson, Professor of Electrical Engineering, King's College, London. 

 Communicated by Sir W. H. Preece, F.R.S 435 



Note on Mr. Bateson's Paper, " Heredity, Differentiation, and other 

 Conceptions of Biology : a Consideration of Professor Karl Pearson's 

 Paper ' On the Principle of Homotyposis.' " By Karl Pearson, 

 F.R.S. . 460 



