BEITISH ASSOCIATION FOE THE ADVANCEMENT 



OF SCIENCE. 



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

 intermitted their Subscription, receive gratis all Rei^orts published after 

 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 

 1S31 to 1874 (of which more than 15 coines remain), at 2s. 6d. 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 iSlO per set. 



Associates for the Meeting in 1906 may obtain the Volume for the Year at two-thirds 



of the Publication Price. 



REPORT OF THE SEVENTY-FIFTH MEETING, in South Africa, 

 August and September, 1905, Published at £1 4s. 



CONTENTS. 



PAGB 



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

 mittees, Grants of Money, &c xxv-csxvii 



Address by the President, Prof. G. H. Darwin, M.A., LL.D., Ph.D., F.R.S. . . 3 



Report of the Corresponding Societies Committee 35 



Report of the Conference of Delegates of Corresponding Societies held in 



London .........•■••• 37 



Report on Meteorological Observations on Ben Nevis 77 



Report on Magnetic Observations at Falmouth Observatory ... .80 



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



Kites 81 



Tenth Report on Seismological Investigations 83 



Report on Electrical Standards 95 



Report on the Tranformation of Aromatic Nitroamines and Allied Substances . 103 



Report on Wave-length Tables of the Spectra of the Elements and Compounds 105 



Report on the Study of Hydro-aromatic Substances 153 



