BIBLIOGRAPHY. 171 



Enumerates localities where stream tin has been worked 

 including the following : — 



(a) Maliwun and the tributaries of the Pakchan. 



(b) Bokpyin river. 



(c) Upper reaches of the Lenya. 



(d) Thengdau river near the coal mine on the Great Tenas- 



serim. 



(e) Thabaulcik on the Little Tenasserim. 



(/) Kamoungtan, Engdaw and Thapyan in the same locality. 



(g) Yamon, 20 miles from Mergui. 



(h) In the Taungbyauk valley. 



(i) Headwaters of the Great Tenasserim. 



(?) Upper courses of streams flowing into the Henzai Bay. 



1850, F. Mason. " The Natural Productions of Burmah, or 

 Notes on the Fauna, Flora, and Minerals of the Tenas- 

 serim Provinces, and the Burman Empire." 2 Vols., Moul- 

 mein. 

 This work is an encyclopedic account of the natural history of 

 Tenasserim, with a portion devoted to geology and 

 mineralogy. It also contains a brief description of tin 

 mines in Mergui and a reference to the occurrence of 

 wolfram. According to the author : — " Tin is abundant 

 in the Provinces, commencing in the mountains in which 

 Tavoy and Henzai rivers have their rise, the northern 

 limit of tin in the Provinces, to the southern boundary 

 of Mergui, Pakchan river. The richest locality in the 

 province of Tavoy is nearly opposite the city of Tavoy 

 on the eastern side of the mountains." Regarding 

 wolfram Dr. Mason writes :— " The tungstate of iron or 

 wolfram sand much resembles tin, and it is found in 

 most neighbourhoods where that ore is obtained, and 

 for which it is often mistaken. One of the Assistant 

 Commissioners at Mergui a few years ago, reported 

 several valuable deposits of tin, not before known, and 

 he raised furnaces on the ground to smelt the ore ; but 

 although he tried hard, and increased the heat to the 

 highest point he was capable of doing, still the ore 

 remained refractory and would not turn into tin. He 

 attributed the fault to his furnaces and came away 



