LONDON: PRINTED BY W CLOWES AND SCKS, DUKE STREET, STAMFORD STREET,
AND CHARING CROSS.
THE GENEROUS FRIENDS OF SCIENCE
IN
B O S T O N A N D C A M B R I D G E ,
T H R O U G H WH O S E L I B E R A L I T Y T H E T R A V E L S
H E R E I N D E S C R I B E D W E RE MADE,
THIS VOLUME
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