251 
1897-98.] Mr W. W. Taylor on Sodium Thiosulphate. 
II. — (A different sample) 0 - 7340 gm. substance gave 0‘5970 gm. 
JSTa 2 S 2 0 3 = 8T35 per cent. 
Calculated for Na 2 S 2 0 3 , 2H 2 0. Found. 
I. II. 
Na 2 S 2 0 3 , 81-46 81-03 8D35 
Note . — .After the greater part of this work had been completed, 
I became aware of a paper on supersaturation by Dr Mcol, which 
recently appeared in these Proceedings .* In his paper Dr Nicol 
mentions that supersaturated solutions of sodium thiosulphate de- 
posit crystals, the formula of which is probably Na^C^, 2H 2 0. 
Proc. Roy. Soc. Edin xxi. (1897), p. 473. 
