CHAPTER VII. 



PRODUCTION OF CHA NIHO IN SIND ; CURRENT PRICES ; 

 GRADES OF CHANIHO ; METHODS OF COLLECTING ; PRICES 

 OF SODA-ASH AND CONSUMPTION OF SODA IN INDIA; 

 CONCLUSION. 



The earliest returns which I have been able to obtain date 



from 1895 to 1900. These are given in a 



Production of chaniho memorandum by the Commissioner in Sind, 

 from, the Khafepor ^ ^^ dated w M&y ]m The ^^ 



are given in figures which evidently represent 

 mauuds, although the unit has been omitted from the copy of this 

 letter shown to me. Separate returns are given for kharo (crystalline 

 trona) and for phrfi (efflorescent impure trona). 



Table XII. — Output of chaniho in Khairpur State from 1895 to 



1900. 





Season. 



Kharo 

 Chaniho. 



Phuli. 



Total. 



1895-96 . 



• • • 



08,529 



4,540 



73,069 



1896-97 . 



\ • • • 



78,471 



387 



78,868 



1897-98 . 



• • • t 



28,143 



1,008 



29,151 



1898-99 . 



i » • • i 



34,524 



0,726 



41,250 



1899-1900 



» • • • 



59,895 



945 



60,840 



Total for five years :— 283,168. Average yearly production :— 56,633. 



This average yearly production works out at 2,089 tons of trona 

 per annum, which corresponds to probably about 1,000 tons of soda- 

 ash. Pure trona ought to contain 70-3 per cent, of anhydrous 

 sodium carbonate, but the commercial trona of Sind is never pure ; 

 consequently it may be regarded as certain that 2,089 tons of tiona 

 correspond to considerably less than 1,468 tons of Na 8 C0 3 . The 

 figure is therefore nearer to 1,000 tons. 



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