The calomel must be ground to an impalpable powder, and elutriated.
The softest and purest white chalk, elutriated, made into balls, and well dried.
It is then ground and elutriated with pure cold water, as before.
The elutriated paste or moist powder is then drained, and dried.
The powder when cold is ground in a proper mill, levigated with water, and elutriated, as will ...