no Mr. rennsll’s Account of the 
anfwer to this, I fhalhobferve, that it is proved by experiment, I 
that at any given time, the quantity of the increafe in different 
places, bears a juft proportion to the fum total of the increafe 
in each place refpedlively : or, in other words, that when the 
river has rifen three feet at Dacca, where the whole rifing is j 
about 14 feet ; it will have rofe upwards of fix feet and a 
half at Cuftee, where it rifes 31 feet in all. 
The quantity of water difcharged by the Ganges, in one 
fecond of time, during the dry feafon, is 80,000 cubic feet ; 
but in the place where the experiment was made, the river, 
when full, has thrice the volume of water in it ; and its mo- 
tion is alfo accelerated in the proportion of 5 to 3 : fo that the 
quantity difcharged in a fecond at that feafon is 405,000 cubic | 
feet. If we take the medium the whole year through, it will 
he nearly 180,000 cubic feet in a fecond. 
. 
THE Burrampooter, which has its fource from the oppofite 
fide of the fame mountains that give rife to the Ganges, firft : 
takes its courfe eaftward (or diredtly oppofite to that of the 1 
Ganges) through the country of Thibet, where it is named | 
Sanpoo or Zanciu, which bears the fame interpretation as the : 
Gonga of Hindooftan : namely, the River. The courfe of it 
through Thibet, as given by Father du halde, and formed 
into a map by Mr. d’anville, though fufficiently exadt for 
the purpofes of general geography, is not particular enough to 
afcertain the precife length of its courfe. After winding with 
a rapid current through Thibet, it wafhes the border of the ter- 
ritory of Lafla (in which is the refidence of the grand Lama) 
and then deviating from an eaft to a fouth-eaft courfe, it ap- 
proaches within 2zo miles of Yunan, the wefternmoft province 
