Vol. ey 9.) The Kosi River. 469 
S.] 
and the junction of the Likhu and main Kosi still needs explana- 
tion. In 7 no siprinnce ran eastwards from the junction just 
mentioned, while a very strong stream now runs in that direction 
and intercepts the ethos of the Likhu and Tamba von ue 
natural tendency of the Likhu Kosi’s mouth under the n 
tions would be to move og ee and it is possible that Rennell's 
map is not, after all, out in Azim 
In addition to the evidense' of Rennell’s map, there.are other 
points which Depgore the conclusions drawn from that map. 
We have said that the Tamba Kosi in 1767 very probabl 
flowed into the Kamla; when it is remembered that different 
- are almost, if not actually, linguistically interchangeable letters ; 
and lastly, that the nomenclature of many Himalayan rivers is at 
present a controversial _ it must be admitted that there is a 
great similarity between the names Tamba and Kamla; this 
similarity is emphasized Dy the existence, in the Purnea District, 
of a stream also known as the Kamla which is in direct prolonga- 
tion of the upper course of the most easterly feeder of the Kosi, 
viz., the Tamru!; here we find almost an identical parallel with 
the former exam le, 
further and even more striking case exists; the Tiljooga 
River now flows in imaginary prolongation of the udh Kosi; if the 
Siwaliks did not exist, the two rivers would probably be one. At 
one time this appears to have been the case; for, if we look to the 
north of the Choorea Ghatee Hills we find a stream called the 
Trigooja crossing the dotted red line between the Dudh Kosi and 
the Tiljooga; the elevation of the Choorea Ghatee Hills * would 
cause the appearance of such a stream as the Trigooja, and it is 
very remarkable that its name shonld be that of what | assume 
to have been a stream which once crossed the present bed of the 
Trigooja at right angles. 
radition in North Bhagalpur states that, in the past, 
streams of much greater size than the existing rivers flowed from 
the north; a careful observer may notice that the undulations 
which occur in this part have, although long since smoothed by 
wind and weather, still the appearance Re remains of old wed 3 
stream now _— dead, rans in “ap bed. which was i Obvichaly zs 
cience, Risto? ‘tradition oud ocular demiomstration all agree 


1 Burrard and Hayden, on page 150, Part pe - their “ Geography and 
Geology of the Himalaya Mountains and Tibet,” give the following sources to 
the different names used for this river: Tam a (Montgomerie) Tamor 
(Hodgson); Tambur (Hooker), The authors ‘Beitlalies accept the name 
‘am! 
2 Burrard and Hayden—* Geography and oe of the Himalaya 
Monntains and Tibet,” Part III, footnote to page 
“The affluents of the Kosi have not been waa ne converge by the ridges 
running southwards from Kinchinjanga set Gosainthan, but by the recent 
rise of the lesser Hiielayiis range across their path.” 
