ACIDS.

53

Boiling- distilled water, two gallonsand a-half;

Prepared chalk, twenty-five ouncesand six drachms ;

Diluted sulphuric acid, ten pints andseven fluidounces;

Muriatic acid, twenty-six fluidouncesand a-half, or a sutEciency.Boil the bitartrate with two gallons of thewater, and add gradually half the chalk, con-stantly stirring : when the effervescence isover, add a Solution obtained by dissolvingthe rest of the chalk in the muriatic acid di-luted with four pints of the water. Afterthe tartrate of lime has subsided, pour off theliquid, and wash the tartrate with distilledwater tili it is tasteless. Then pour the di-luted sulphuric acid on the tartrate, and boilfor fifteen minutes. Evaporate with a gen-tle heat to obtain crystals. Purify these byrepeated Solution, filtration, and crystalliza-tion.