EEPOET 



OF THE 



FIFTIETH MEETING- 



OF THE 



BRITISH ASSOCIATION 



FOR THE 



ADYMCEMENT OF SCIENCE; 



HELB AT 



SWANSEA IN AUGUST AND SEPTEMBER 1880. 



LONDON : 

 JOHN MUKKAY, ALBEMARLE STREET. 



1880. 



Office of tie Association : 22 Albemaele Street, London, "W. 



