1 1 4 Mr . rennell’s Account of, (Sc. 
and is perceptible above Hoogly Town ; and fo quick is its 
motion, that it hardly employs four hours in travelling from 
one to the other, although the diftance is near 70 miles. At 
Calcutta, it fometimes occafions an inftantaneous rife of five 
feet : and both here, and in every other part of its track, the 1 
boats, on its approach, immediately quit the fhore, and make 
for fafety to the middle of the river. 
In the channels, between the iflands in the mouth of the 
Megna, &c. the height of the Bore is faid to exceed twelve feet ; j 
and is fo terrific in its appearance, and dangerous in its confe- 
quences, that no boat will venture to pafs at fpring tide. After j 
the tide is fairly paft the iflands, no veftige of a Bore is feen, 
which may be owing to the great width of the Megna, in com- 
parifon with the paffages between the iflands ; but the effeds 
of it are vifible, enough by the fudden rifing of the tides. 
