BEITISH ASSOCIATION FOE THE ADVANCEMENT 



OF SCIENCE. 



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

 intermitted their Subscription, receive gratis all Reports 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, viz. — Reports for 

 1S31 to 1874 (of which more than 15 copies 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 £10 per set. 



Associates for the Meeting in 1900 may obtain the Volume for the Year at two-thirds 



of the Publication Price. 



REPORT OF THE SIXTY-EIGHTH MEETING, at Bristol, 

 September, 1898, Published at £1 is. 



CONTENTS. 



PAGE 



Rules of the Association, Lists of Officers, Grants of Money, &c. . xxix-cxvi. 



Address by the President, Sir AVilliam Crookes 3 



Eeport of the Corresponding Societies Committee 41 



Report of the Committee for the Establishment of a Meteorological Observa- 

 tory at Montreal 79 



Report on the Comparison and Reduction of Magnetic Observations ... 80 

 Stream-line Motion of a Viscous Film. By Professor Hele Shaw and 



Sir G. Stokes 136 



Report on the Calculation of Tables of certain Mathematical Functions . . 145 



Report on Electrical Standards 145 



Interim Report on Electrolysis and Electro-chemistry 158 



On the Use of Logarithmic Co-ordinates. By J. H. Vincent .... 159 



Tliird Report on Seismological Investigation 179 



Report on Meteorological Observations on Ben Nevis 277 



Eighth Report on the Application of Photography to the Elucidation of 



Meteorological Phenomena 283 



Report on the Action of Light upon Dyed Colours 285 



Third Report on the Carbohydrates of the Cereal Straws 293 



Fifth Report on the Electrolytic Methods of Quantitative Analysis . . . 294 



Report on Isomeric Naphthalene Derivatives 311 



