the Substances usually present in Water. 47 



have been effected within the memory of many still 

 alive. 



Chemistry is one of the most fascinating, as well as one of 

 the most useful of the sciences. Its brilliant experiments, 

 well arranged and dextrously conducted, produce effects far 

 surpassing those recorded in tales of eastern magic, are often 

 indelibly impressed on the youthful mind, and excite a curio- 

 sity to know their causes, and an ardour in the pursuit of 

 the science, which no privations can damp, no obstacles re- 

 press. • 



On the Tin of the Province of Mergui. By Capt. G. B. Tremenheere, 

 Executive Engineer. With a Map, PI, ii. 



(Communicated by the Coal and Mineral Committee.) 



1 . The tin of this province has not been sought for since the Bur- 

 mese took possession of the country from their Siamese neighbours. 

 Under the rule of the latter, or during the period at which Tenasserim 

 was an independent state, extensive works for tin were carried on. 

 It occurs chiefly in the beds and banks of streams issuing from the 

 primitive mountains, which form the principal feature of this penin- 

 sula. Portions of the banks of streams in which it is found are, in 

 some instances, rivetted with rough stone work to confine the water 

 for washing operations; and the ground on either side for many 

 miles along their course is penetrated by innumerable pits, from 

 eight to ten and twelve feet deep. Traces of the work of many 

 thousands of men are evident in several places. These pits are not 

 connected with one another, but seem to have been sunk by separate 

 small parties of men, to whom probably definite tasks were assigned, 

 with a view of tracing the tin ground, and of extracting the gravel 

 with which the tin is mixed. 



Their variable depth, and the amount of labour expended on them, is 

 a tolerable indication of the success with which this has been pursued, 

 and of the places in which ground might be again perhaps opened 

 with advantage. 



