20 
JULY 1764. 
The 13th. all day Cloudy and cool. Proceeded with the Survey of the Comer 
Creek & find from 14 to 21 Cubits Water w ch . allowing 7 Cubits for the Rise, will be 
no 'less than 7 Cubits in y e dry Season. 
33 Two miles & half above y e head of the Burrashee the Eastmost Branch of Custee 
Creek 1 2 falls into the Comer ; the Water of it appears quite black at this Season : it is 
named by the Country People Tettydoman Creek. The Village of Tettydoman lies 
on y e East side of it, just where it joins the Comer. From hence the Course of the 
Comer is WBS for some Miles. 
The 14th. a cool Morning ; the middle of the day excessive hot. Three Miles 
West from Eettydoman the Creek turns to y e Northward, & continues that Course 
for 3 Miles more, & then goes to the SW for near the same Distance. We find the 
depths of Water from 34 to 8 Cubits (in y e dry Season), the Banks being mostly 
covered with Jungle we have very troublesome Work to survey them. 
The 15th. the Forenoon again excessive hot, having mostly Calm Weather ; the 
Afternoon and Evening cool & pleasant. Still following y e Course of the Comer 
Creek. We find abundance of Turtle here, some of them very large. The Countrey 
24 People inform us that they never saw any Europeans pass this way before. 
The 1 6th. the Morning & Evening fine Weather, the middle of the Day excessive 
hot. This Day in pursuing the Course of the Comer we came into another Creek 
which is much larger than that, & which comes from the Northwest. The Countrey 
People inform us that it is the Westmost Branch of Custee Creek, but cannot inform 
us how far up it is navigable, or whether betwixt this & Custee any Creeks run out 
of it to the Southwest. This Creek has likewise the name of Comer or Comare ; & 
now the two Creeks of that name joining, they proceed with a rapid Current to the 
South & South East forming a large Creek or River known by the name of the 
Burrasaat. 
Some Boatmen that we have met here inform us that the Burrasaat runs 
towards Backergunge, a large Village situated on y e Eastern Skirts of the Wood or 
25 Sunderbound, that a few Coss down a Creek runs out from y e East Side & commu- 
nicates with the Burrashee ; & that three or four Days down, another Creek runs 
out from the West Side " & goes either to Rangafulla or the Southern Takes 3 by 
Calcutta. If this Information be true, we have yet Hopes of finding the desired 
Passage ; & indeed by the Course of the Creek we have some Reason to believe it. 
1 The Garai river. Hunter says “ during the rains so much water flows through the Kaliganga channel into the 
Kumar that at Ratnnagar, near Magura, the latter has to get rid of the surplus, and discharges part of its water back 
again into the Garai channel.” This may account for the black colour of the water noted by Rennell, the portion of 
the creek where he made this observation forming a kind of back-water (Imp. Gaz., Vol. v, p. ti). 
2 Probably the Nabaganga. According to Hunter, it is drying up year by year and is not navigable in the hot 
season. (Imp. Gaz., Vol. x, p 125). 
The Salt-water hakes, about 5 miles E. of Calcutta, part of which is now used for the disposal of the sewage 
of the city. They are connected with Khulna at the head of the Sunderbans, by canals, the traffic over which now 
averages 1,000,000 tons per annum, valued at nearly four millions sterling (Imp. Gaz., Vol. ix, p. 287). This route is 
referred to in Rennell’s ‘ Memoir of Hindoostan ’ (p. 363) as the Baliagot Passage, now the Baliaghata canal. In the 
same place he mentions that within a very few years, a small canal has been cut, to join the lake with the river. 
This is Tolly’s Nullah, constructed in 1777 by Major Tolly, who utilised an old bed of the Ganges. 
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