Grayish-white or yellowish-white powder or yellowish grains or scales, with a characteristic, slightly saline taste and a peculiar odor. Slowly soluble in water and in diluted alcohol. ACTION AND USES: For making wheys and junkets =Resina (Resin.), Rosin, U.S.P.= (Colophony).--The residue left after distilling the volatile oil from turpentine (the oleoresin). ACTION AND USES: Used in the preparation of ointments and plasters. Rubefacient. _Ceratum Resinae (Cerat. Res.), Rosin Cerate, U.S.P._ (Basilicon Ointment).--Rosin, yellow wax and lard. _Ceratum Resinae Compositum (Cerat. Resin. Co.), Compound Rosin Cerate, N.F._ (Deshler's Salve).--Rosin, yellow wax, prepared suet, turpentine and linseed oil. _Emplastrum Elasticum (Emp. Elast.), Rubber Plaster, U.S.P._ (Rubber Adhesive Plaster).--A mixture of rubber, resins, and waxes, with a filler of an absorbent powder. _Emplastrum Resinae (Emp. Res.), Rosin Plaster, U.S.P._ (Rosin Adhesive Plaster, Adhesive Plaster).--Rosin, lead plaster and yellow wax. =RESINAE, RESINS.=--Resins are the residues obtained by distilling the volatile oil from oleoresins or the precipitates obtained from solutions of resins in alcohol by the addition of water. For the official resins see under the names of the principal constituents. =*Resorcinol (Resorcin.), Resorcinol, U.S.P.= (Resorcin).--Metadihydroxybenzene. Colorless or nearly colorless crystals or powder with a faint, peculiar odor and a taste at first sweetish, afterward bitter. Very soluble in water (1:0.9) and in alcohol (1:0.9). ACTION AND USES: Irritant, antiseptic; used internally in gastric fermentation; externally in skin diseases. DOSAGE: 0.125 Gm. or 2 grains (U.S.P.). _Pasta Resorcinolis Fortis (Past. Resorcin. Fort.), Strong Resorcinol Paste, N.F._ (Lassar's Stronger Resorcinol Paste).--Resorcinol (20%), zinc oxide (20%), starch and light liquid petrolatum. _Pasta Resorcinolis Mitis (Past. Resorcin. Mit.), Mild Resorcinol Paste, N.F._ (Lassar's Mild Resorcinol Paste).--Resorcinol (10%), zinc oxide (25%), starch and liquid petrolatum. _Unguentum Resorcinolis Compositus (Ung. Resorcin. Co.), Compound Resorcinol Ointment, N.F._--Resorcinol, zinc oxide, bismuth subnitrate and rectified oil of birch tar (each 6%), in yellow wax, petrolatum, anhydrous wool fat and glycerin. USES: Complex antiseptic ointment. =Rhamnus Cathartica (Rhamn. Cath.), Rhamnus Cathartica, N.F.= (Buckthorn Berries, Baccae Spinae Cervinae).--Ripe fruit. ACTION AND USES: Superfluous hydragogue cathartic. DOSAGE: 1 Gm. or 15 grains (N.F.). _Fluidextractum Rhamni Catharticae (Fldext. Rham. Cathart.), Fluidextract of Rhamnus Cathartica, N.F._--Rhamnus cathartica (100%). Absolute alcohol content about 40 per cent. DOSAGE: 1 Cc. or 15 minims (N.F.).