Peruvian bark 2 oz., orris root 1 oz., sal ammoniac 1/2 oz., catechu 6 drs., myrrh 6 drs., oil of cloves 6 or 8 drops.

Saunders' Dentifrice. Prepared chalk 2 oz., cuttle-fish bone 1 oz., orris 1 oz., myrrh 1/2 oz., sulphate of quinine 10 grs.

Dr. Schoepf's Tooth Powder, against mercurial salivation. Alum 2 scruples, cinchona bark, 1 oz.

Violet Tooth Powder. Orris root 2 oz., cuttle-fish bone 4 oz., precipitated chalk 12 oz., bicarbonate of soda 1/2 oz., essence of violets 1 dr., pure percyanide of iron and crimson lake or rose-pink, enough to give it a pale violet colour. See Pulvis Dentifricius, Pocket Formulary.