PROCEEDINGS OF 

 THE ROYAL SOCIETY. 



vol. lxx. No. 462. 



CONTENTS. 



PAGE 



On the Interpretation of Photographic Records of the Response of Nerve 

 obtained with the Capillary Electrometer. By George J. Burch, M.A , 



F. R.S., Physiological Laboratory, Oxford 194 



Contributions to a Theory of the Capillary Electrometer. I. — On the In- 

 sulation Resistance of the Capillary Electrometer, and the Minimum 

 Quantity of Electricity required to produce a Yisible Excursion. By 

 Georg-e J. Burch, M.A. Oxon , F.R.S., Lecturer in Physics, Read- 

 ing College, Reading 221 



On a Peculiarity of the Cerebral Commissures in certain Marsupialia, not 

 hitherto recognised as a Distinctive Feature of the Diprotodontia. By 



G. Elliot Smith, M.D., Ch.M., Professor of Anatomy, Egyptian 

 Government School of Medicine, Cairo, and Fellow of St. John's College, 

 Cambridge. Communicated by Professor G. B. Howes, F.R.S. . . 226 



A New Interpretation of the Grastric Organs of Spirula, Nautilus, and the 

 Gastropods. By J. E. S. Moore and W. B. Randles, B.Sc. Communi- 

 cated by Professor G. B. Howes, F.R.S 231 



Coefficients of the Cubical Expansion of Ice, Hydrated Salts, Solid Carbonic 

 Acid, and other Substances at Low Temperatures. By James Dewar, 

 M.A., D.Sc, LL.D., Jaclcsonian Professor, Cambridge University, and 

 Fullerian Professor, Royal Institution, London 237 



Report of Absolute Magnetic Observations at the Valencia Observatory 

 (Cahirciveen, co. Kerry), 1899, 1900, and 1901. By J. E. Ctjllum. 

 Communicated by The Earl oe Rosse, F.R.S 246 



Microscopic Effects of Stress on Platinum. By Thomas Andrews, F.R.S., 



F.C.S., and Charles Reginald Andrews. (Plate 4) . . . . 250 



A Note on the Recrvstallisation of Platinum. By Walter Rosenhain, 

 B.A. (Cantab.), B.C.E. (Melbourne). Communicated by Professor 

 Ewing, F.R.S .252 



On some Phenomena affecting the Tr#a«a&iision of Electric Waves over the 



Surface of the Sea and Ear^CjJjSdSJliSfeNB. Jackson, R.N., F.R.S. 254 



Price Two Shillings and Sixpence. 



July 8, 1902. 



