TEANSACTIONS OF SECTION B. 



639 



Three processes were mentioned whereby it is proposed to effect this: that of 

 Solway for heating the residual calcium chloride with clay ; that of !Mond for 

 decomposing the ammonium chloride by oxide of nickel ; that of Weldon & 

 Pechiney for decomposing magnesium chloride by heat and steam, whereb}- chlorine 

 is produced; none of them were, however, commercially established. Considered 

 as a soda process simply, it is acknowledged that the Leblanc method is now 

 surpassed by its rival, holding its ground by virtue of its by-products, yet a 

 strong hope was expressed that methods proposed by Carey, Gaskell & Hunter, and 

 by Parnell & Simpson for modifications of the Leblanc process, also by Chance for 

 a new sulphur recovery process, may so strengthen the hands of the older manu- 

 facturers as to save them from defeat. 



The following table was given, showing the 



Import and Export of Foreign Soda to and from Germany. Amount given in Tons. 

 The figures printed in italics indicate Exports, the plai?i figures Imports. 



Also a table showing the 



Annual Production of Alkali, 4'r., in United Kingdom. 



' This includes Chlorate of Potash, taking- 5 tons of Bleaching Powder for 1 ton 

 of Chlorate. The amount of Chlorate now made is 7,000 tons per annum. 



