REPORT 
OF THE 
EIGHTEENTH MEETING 
ai ee 
“A\Sn = Mi 
ZaX\\It se MU ON 
Lae Pas XYvVeZ 
l ore %, At ae? ELY 
OF THE [2 Gir is TE 
Ca eS 
“ASTOR 
BRITISH ASSOCIATION 
FOR THE 
ow 
ADVANCEMENT OF SCIENCE; 
HELD AT SWANSEA IN AUGUST 1848. 
LONDON: 
JOHN MURRAY, ALBEMARLE STREET. 
1849. 
