(yfZcenma: or Yangoma. 6S 
In Mr Arrowsmith’s map of Asia, the Salusen, I suspect, is 
placed too far to the west, leaving thus too little room for the 
Shanwas, and enlarging too much the territory of the J un Shan. 
There is reason to think, as I have mentioned (vol. v, p. 8S), 
that Martaban has been placed by Mr Arrowsmith too far to 
the west, and I see no authority for giving the Saluseii the great 
bend to the west, between the ^2d and 28d degrees of latitude. 
On the contrary, all the authorities which I received made it 
run, without any considerable bend, until it approached the sea,, 
where it turns towards the west for 30 or 40 miles, before it en- 
ters the Gulph of Martaban. We may, therefore, I am per- 
suaded, place the course of this river downwards, from between 
the S2d and 23d degrees of latitude, half a degree farther east 
than Mr Arrowsmith has done ; and thus the Salu^n, in Lat. 
20° N., near the centre of the Jun Shan territory, should be in 
Long. 98° 27' E. from Greenwich, in place of 97° 57', where it 
is placed in Mr Arrowsmith’s map. 
It is not only, however, the Saluaen that must be carried far- 
ther east, than Mr Arrowsmith has done ; but Zsenmae must be 
moved at least as far in the same direction ; and, of course, it 
must be followed by that part of the river of Siam on which it 
stands, thus giving the lower part a direction nearly north and 
south. I have already mentioned the surmises of M. Matte Brun 
concerning the identity of this river with the Nookian of Thibet, 
or Loukiang of China ; but, as these surmises rest merely on 
the size of the river of Siam in the lower part of its course, they 
have no weight ; for, below Zasnmse, it receives by the Anan a 
considerable proportion of the waters of the Msekhaun, one of 
the largest rivers of Asia. The identity of the Loukiang and 
Saluagn, in my opinion, is fully demonstrated by the journey 'of 
the Bhanmo prince (see this Journal,, vol. hi. p. 35), and by the 
general map of the slave (vol. ii. of this Journal). The source of 
the river of Siam is, I think, ascertained to be situate on the 
southern boundary of the Chinese province of Yunnan, where a 
large portion of country, between the Loukiang or Salusen, and 
the Kioulong Kiang or Maskhaun, is occupied by what are 
called wild Lawas or Lolos, extending probably from about the 
22d to the 24th degree of latitude, with a breadth, along the 
Tropic, of two degrees of longitude j but, measuring along the 
