2i4 Salt s.

Add, by degrees, the vitriolic Acid, firifmixed with the water, to the falt: then dif-tiil.

The fpecific gravity ö? this is to that ofdiftiiled water as 1,170 to i,oco.

k E M A & K.

This was formerly ^led Spiritus Salis manntGlauben. The addkion of watef is here neceifa-iy, the marine vapöurs being io volatile, asfcarce«ly to cöndenfe without ferne adventitious hum?-dity. The vitriolic aeid is moft conveniently mixedwith die water in an eärtken or ftone-ware t-effel ;for, unlefs the mixtureis madevery flowly, itgrowSfo hot ss rö endanger the breaking i glafs orie. Themixture fhoüld be put to the falt under a chim-ncy, as the white fumes, heai arifing, ooght alfo to>be avoided.

When the mixture is grown fomewhat cool, itmay bepoiiredontheSak alreadyplacedin th retort^and the diftillation directly begun. Hefe alfo a tu-bulated reeeiver is proper. The heat is :o be foeondufled as to prevent the matter from boiJtng o-ver, or the fumes rifing'fo quick as to er danger thereeeiver. The Salt left in the retort, when purified,

gives