[ 555 1 
XXXVII. A Treatife on Rivers and Canals. By Tlieod. 
Aug. Mann, Member of the Imperial and Royal Aca- 
demy of Sciences at Bruffels ; communicated by Jofeph; 
Banks, Efq. P. R. S. 
f ...» , ' . " * ■ \ >■ * 
Read June 24, 1779* 
TO JOSEPH BANK S., E S Q P. R; -S'i- 
th - 
S I K r , 
~\T OUR election to the Prefidency of the fiflt literary 
and fcientific Society in the world, to a chair fo 
long and fo glorioufly occupied by the great newton;; 
joined to the friendlhip you have been pleafed to honour 
me with fi nee my being firft known to you: has encou- 
raged me to fend you fomething of my compofition, as 
the beltway of expr effing my fincere refpect and attach- 
ment to you, and my profound veneration for the illuf- 
trious Body which has chofen you for its head. Though 
various circumftances, by carrying me very early into fo- 
reign countries, have made me from my youth almolt 
am 
