[72 3 
of certain quantities, according to circum- 
stances. 
We have carefully perused Mr. Beatson's 
observations on embankments, and do not 
find any thing new in them ; but wc beg 
leave to recommend to that gentleman to be 
careful how he encourages persons who arc 
occasionally employed to proteCf land I'rom 
the overflowing of rivers, to increase the dis- 
tance of the banks. This error was com- 
mitted by Bishop Morton, an engineer of 
ancient date, but of great estimation in his 
time, who scliemed the constrii6fion of tlie 
banks of tiie river Ncnc, between Peter- 
borough and Wisbcach. The space between 
them is called Morton’s Learn. The banks 
are in many places nearly a jnile asunder, 
that t!ie w'ater may expand itself from the 
\ 
channel of the river in times of flood, wdth 
a view to ease the banks ; but unfortunately 
it appears from subsequent experience, that 
by such expansion sediment is constantly 
deposited in the channel or bed of the river, 
impeding the navigation, wTich would have 
