BRITISH ASSOCIATION FOE THE ADVANCEMENT 



OF SCIENCE. 



Life Members (since 1845), and all Annual Members who have not 

 intermitted their Subscription, receive gratis aU Reports published aft(5r 

 the date of their Membership, Any other volume they require may be 

 obtained on application at the Office of the Association, Burlington 

 House, Piccadilly, London, W., at the following prices : Reports for 

 1331 to 1874 (o/ which more than 15 copies remain), at 2s. Qd. per volume ; 

 after that date, at two-thirds of the Publication Price. A few sets, from 

 1831 to 1874 inclusive, may also be obtained at £10 per set. 



Associates for the Meeting in 1908 may obtain the Volume for the Year at two-thirds 



of the Publication Price. 



REPORT OP THE SEVENTY-SEVENTH MEETING, at Leicester, 

 July- August 1907, Published at £,\ is. 



CONTENTS. 



PAGE 



Rules oE the Association, Lists of Officers, Report of the Council, List of Com- 

 mittees, Grants of Money, &c xxvii-cxxviii 



Addressby the President, Sir David Gill, K.C.B., F.RS 3 



Report of the Corresponding Societies Committee 29 



Report of the Conference of Delegates of Corresponding Societies held at 



Leicester 30 



Report on Electrical Standards 73 



Twelfth Report on Seismological Investigations 83 



Report on Magnetic Observations at Falmouth Observatory .... 93 



Report on the Further Tabulation of Bessel Functions 94 



Report on the Teaching of Elementary Mechanics 97 



Sixth Report on the Investigation of the Upper Atmosphere by means of 



Kites 99 



Report on Meteorological Observations on Ben Nevis 100 



Report on the Transformation of Aromatic Nitroamines and Allied Substances . 101 



Report on the Study of Hydro-aromatic Substances 104 



Report on Wave-length Tables of the Spectra of the Elements and Compounds 116 



Report on Dynamic Isomerism 270" 



Report on the Study of Isomorphous Derivatives of Benzene Sulphonic Acid . 272 



The Applications of Grignard's Reaction. By Dr. Alex. McKenz ie, M.A. . . 273 

 1908. 3 K 



