368 
Memorandum on the countries between 
[No. 4 
tribes of those parts. Agreeably to my demand, the following de- 
tails have been forwarded to me and received here about three months 
ago. The letter is dated 9th August, 1859,* and runs as follows : 
“ Dear Monseigjteitr. 
“ I need hardly state that the items of information respecting the 
position of places are not based on geometrical mensuration, or astro- 
nomical observations. They have been collected on the spot from 
personal observation, and from the reports supplied by natives of 
various nations and tribes. 
I. “ Relying upon the Map of Andriveau Goujon, Paris, 1841, 
the main chain of the Himalaya is supposed to end in the Province 
called Khana Deba,f by the 27° and 28° of North Lat. and the 
9C°I of (Paris) Long. 
II. “ From probable, but not positive, calculations that I have 
made, as well as from the particulars I have been able to collect, the 
Chinese towns of Longtchang-fou,§ Tenine tchou,|| ought to be 
placed one degree and a half farther in an eastern direction, and the 
distance between the Irrawaddy and the Louts Kiang ought to be 
nearly double that which is indicated on the said Map.^j 
III. “ On the same map Tsatsorken (in Thibetan Tsarong),* and 
the tributary of the Louts Kiang are marked too low in a southern 
direction. The great bending of the two rivers Louts Kiang and 
Lantsan Kiang seems to begin above the 28° of Latitude. Bonga, our 
small establishment, is in one of the valleys of the range of moun- 
tains that separate those two rivers, near to the left bank of the 
Louts Kiang, and not far from the beginning of the bending from 
N. W. to S. E. in about 28* 15' N. Lat. 
* Therefore about ten months on the way. — Y. 
t Khana Deba is the name given by Wilcox’s informants to a Tibetan chief 
near the sources of the Brahmaputra. It is derived from Wilcox by the French 
geographers. — Y. 
J Add 2° 20' for Greenwich = 98° 20', which agrees pretty well with Wilcox’s 
Map. 
§ Should be Yong-chang-foo probably, but may be Loung-chouan-foo the 
Mowun of the Burmese. — Y. 
|i Theng-ye-choo of the Maps, the Momien of the Burmese.— Y. 
If The Vicar is doubtless forced to this conclusion by the wrong position given 
to the Irawadi on his maps. In compiling my map of Burma I was compelled 
to take an opposite view and to move these places and the Chinese- Burman 
frontier to the westward. See Mission to Ava, pp. 266. — Y. 
t Tsatsorgang in Klaproth’s map is in Lat. 30° 18', Long. Paris 95°54'=Gr. 
98° 14'. In D’Anville its latitude is 28° 20'. All the latitudes in D’Anville’s maps 
hereabouts are greatly too low, as our knowledge of Assam demonstrates. — Y. 
