[ " J 



VI. On the Specific Heats of Air and Carbon Dioxide at Atmospheric Pressure by 



the Continuous Electric Method at 30 C. and 100 C. (Experiments per- 

 formed in the Physical Laboratory of the Royal College of Science, London, 

 S. H r .) By W. F. G. SWANN, A.R.C.S., B.Sc., Assistant Lecturer in Physics 

 at Sheffield University. Communicated by Prof. H. L. CALLENDAR, M.A., 

 F.R.S. ................... page 199 



VII. The Extinction of Sound in a Viscous Atmosphere by Small Obstacles of 



Cylindrical and Spherical Form. By C. J. T. SEWELL, B.A., Trinity College, 

 Cambridge. Communicated by Prof. H. LAMB, F.R S. ...... 239 



VIII. Some Phenomena of Magnetic Disturbances at Kew. By CHARLES CHREE, 



Se.D., LL.D., F.R.S., Superintendent of the Observatory Department of the 

 National Physical Laboratory. (From the National Physical Labora- 

 tory) . ............. 271 



IX. The Approximate Arithmetical Solution by Finite Differences of Physical 



Problems involving Differential Equations, with an Application to the Stresses 

 in a 'Masonry Dam. By L. F. EICHARDSON, King's College, Cambridge. 

 Communicated by Dr. R. T. GLAZEBROOK, F.R.S. ........ 307 



X. On Scandium. Part II. By Sir WILLIAM CROOKES, D.Sc., LL.D., 



For.Sec.R.S. ....... ............. 359 



XL Observations on the Anomalous Behaviour of Delicate Balances, and an Account 

 of Devices for Increasing Accuracy in Weighings. By J. J. MANLEY, Hon. 

 M.A. Oxon, Daubeny Curator, Magdalen College, Oxford. Communicated 

 by Prof. E. B. ELLIOTT, F.R.S. .............. 387 



Index to Volume 



