229 



COTTER: SODA INDUSTRY OF S1ND 



sufficiently in the dry season. It had about four or 



five feet of water. The specific gravity was 1-189. and 



the water contained 123 -6 grams Na 2 C0 3 per litre. 



Other dhands nearer to the Nara, such as Bar Ramo or Bar Rame- 



wari, and Pokhttlwaro west of Sarwari are fresh. The dhands 



between Usar and the Nara are also fresh. 



In concluding this chapter, I give below tables summarising 



the results of my survey. I reserve questions 



Summary of results _f .,„„,}„„<.• t » , , ^ »^>j.o 



of survey. ot production for a future chapter. From the 



tables given it will be seen that the season 

 1918-19 was inclined to be a dry one to the Nara region, although 

 not excessively so, for it must not be forgotten that besides the 

 effect of dry seasons, the gradual desiccation of the Nara region owino 

 to the control of the floods, is having some effect upon certain 

 dhands. Possibly Drigwari, Ashrafwaro, Kino Chaho, Lahuri, and 

 perhaps one or two more are permanently dry, or at any rate will 

 never have enough water to dissolve the kalar, and recrystallise 

 it out as trona. Other dhands are dry owing to the scanty rainfall, 

 and it is to be hoped will again yield in wetter years. But in wetter 

 years, some of the dhands which now produce will pass into the class 

 of dhands with excess of water. It is exceedingly unlikely that 

 Lambro for instance would yield in a very wet year. It is thus 

 apparent that chaniho is obtained from a different set of dhands 

 each year, according to the rainfall, and that it would be impossible 

 for all the dhands to produce simultaneously. 



From table II it will be seen that there are at least 18 dhands 

 (probably more, for the list is not complete) from which trona 

 could be obtained by artificial methods. 



Table I. —Table showing the state of (he Khairpur dhands, Nara 

 region, as they were in season 1918-19. 







Producing. 



Dry. 



Excwsto water. 



r 



Bulahwari 



W est Dabranwari . 



Khariri. 



DHANDS WBBT< 

 OF NARA. 



Bagarwaro 

 Sukchaho 



Dail 



Chughari Kalarwari 



Virchora. 





Chugbari Chahowari 



1 



Tarai Pir Nanca 



o ■ 





