animal charcoal

Aconite … night boat … sea sick … emetics … exhaustion … stimulants … hard drinking … spontaneous combustion … animal charcoal.

When the phosphates only are of use, burnt bones or the spent animal charcoal of the sugar refiners are to be preferred.

It is sometimes mixed with lime or gypsum, and dried with heat, and sometimes with animal charcoal or peat charcoal.

As the last, but using either alcohol of 90% or ether, and animal charcoal.

Filter through animal charcoal to remove part of the colouring matter.