76

Simple Prefarations.

the Horns are lard, they will be burnt to whiteneß,ffillretaining their original form. L.

Burnt Hartfhorn is not now confidered as a pureearth, having been found to be a Compound of cal-careous earth and phofphoric acid. It is the weak-cft of the animal abforbents, or foluble in acids withthe moft difficulty ; but, whether it be of equal orfuperior ufe, in diarrhceas, to more powerful abfor-bents, muft bedetermined by obfervation.

HERBARUMET FLORUM EXSIC-CATIO.

The drying of Herbs and Flowers.

Spread them lightly, and dry them with agentle heat.

M

K.

Both the colours and virtues of Herbs are pre-ferved in greateft perfection when they are driedhafiily by an heat of common fire as great as thatwhich the fun can impart ; an inftance of whichwe have in the drying of Tea by the Chinefe.Quick drying is more particularly proper for rlowers.SafFron is a part of a flower, dried on paper, on akind of kiln ? with an heat fufficient to make it

fweat,