In the spring of 1883 a Mr. J.B. Thompson, of New Cross, London, patented
a new process of bleaching, the main feature of which consisted in the
use of carbonic acid gas in a closed vessel to decompose the chloride of
lime. The "chemicking" and "souring" operations he performed at one and
the same time. The reactions which took place in his bleaching keir were
stated by the inventor as follows:
Cl.\
1. Ca ) + CO_{2} = CaCO_{3} + Cl_{2}.
OCl./