for medicinal purpofes alfo in thefpring. It may be obferved, like-wife, that it is in this laft feafonthat barks in general are moil: con-veniently peeled off.

Animals and Minerals.Animals and minerals are to bechofen in their mod perfedlHate, unlefs they are orderedotherwife [£.]

The animals of the LondonPharmacopoeia are only millepedes

and the viper, to which the Edin-burgh add fnails. earthworms, andbees: whatever viriucs thefe bodiesmay have, they are fuppofed to bebeft when they have attained totheir common full growth. Asthere are no diftin&ions of matu-rity or immaturity in the mineralkingdom, the only rule for di-refting our choice here mult be,the purity of tke fubjefts from anvmixture of other bodies : none ofthem are ever to be ufed in an im-pure ftate.

PART