Juvenile Library in London, Middlesex

Fragmentary Chemical Observations on Sedative Salt and Acids

The text describes decantation yields and drying to form cindres gravilles used for Frankfort black ink, notes acids from vegetable juices similar to tartar and vinegar, and explains sedative salt derived from borax. It details extraction, crystal forms, volatility, sublimation, melting into glass, and limited water attraction with crystallization upon cooling.