iv CONTENTS. 



EEPORTS ON THE STATE OF SCIENCE. 



Page 

 Experiments for improving the Construction of Practical Standards for 

 Electrical Measurements.— Report of the Committee, consisting of Lord 

 Rayleigh (Chairman), Dr. R. T. Glazebrook (Secretary), Professors 

 W. E. AyRTON, J. Peeey, W. G. Adams, and G. Carey Foster, Sir 

 Oliver J. Lodge, Dr. A. Muirhead, Sir W. H. Preece, Professors 

 A. ScHTJSTEE, J. A. Fleming, and J. J. Thomson, Dr. W. N. Shaw, 

 Dr. J. T. Bottomley, Rev. T. C. Fit^patrick, Dr. G. Johstone Stoney, 

 Pi-ofessor S. P. Thompson, 'Mi\ J. Rennie, Principal E. H. Griffiths, 

 Sir A. W. RrcKER, Pi-ofessor H. L. Callendar, and Messrs. G. Matthey, 

 A. P. Trotter, T. Mather, and F. E. Smith 31 



Appendix I. — On the Secular Changes of the Standards of Resistance 



at the National Physical Laboratory. By F. E. Smith, A.R.C.Sc. 34 



Appendix II. — Specifications for the Practical Realisation of the 

 Definitions of the International Ohm and International Ampire, 

 and Instructions for the Preparation of the Weston Cadmium 

 Cell 51 



JIagnetic Observations at Falmouth Observatory. — Report of the Com- 

 mittee, consisting of Sir W. H. Preece (Chairman), Dr. R. T. Glazebrook 

 (Secretary), Pi-ofessor W. G. Adams, Dr. Chree, Captain Creak, Mr. W. L. 

 Fox, Sir A. W. Rucker, and Pi-ofessor Schuster 55 



Geodetic Arc in Africa. — Report of the Committee, consisting of Sir George 

 Darwin (Chairman), Sir David Gill (Secretary), Major C. F. Close, and 

 Sir George Taubman Goldie, appointed to co-operate in the measure- 

 ment of a further portion of the Geodetic Arc of Meridian North of Lake 

 Tanganyika. (Drawn up by the Chairman) 56 



Meteorological Observations on Ben Nevis. — Report of the Committee, 

 consisting of Lord McLaren (Chairman), Professor Crum Brown (Secre- 

 tary), Sir John ]\Iurray, Professor F. W. Dyson, and Mr. R. T. Omond . . 58 



The further Tabulation of Bessel Functions. — Report of the Committee, 

 consisting of Professor M. J. M. Hill (Chairman), Dr. L. N. G. Filon 

 (Secretary), and Professor Alfred Lodge 58 



Investigation of the Upper Atmosphere by means of Kites in co-operation 

 with a Committee of the Royal Meteorological Society. — Seventh Report 

 of the Committee, consisting of Dr. W. N. Shaw (Chairman), Mr. W. H. 

 Dines (Secretary), Mr. D. Archibald, Mr. C. Vernon Boys, Dr. R. T. 

 Glazebrook, Dr. H. R. Mill, Professor A. Schtjsteb, and Dr. W. 

 Watson. (Drawn up by the Secretary) 59 



The Captive Balloon at the Howard Estate Kite Station. By J. E. 

 Petavel, F.R.S 59 



