DOSAGE: 4 Gm. or 1 drachm (U.S.P.). _Species Laxativae (Spec. Lax.), Laxative Species, N.F._ (Species Laxantes, N.F. III, St. Germain Tea).--Senna (40%), potassium bitartrate (10%), elder flowers, fennel and anise. DOSAGE: 1.3 Gm. or 20 grains (N.F.). _Syrupus Ficorum Compositus (Syr. Ficor. Co.), Compound Syrup of Figs, N.F._--Fluidextract of senna (20%), aromatic fluidglycerate of cascara sagrada (10%), with figs, oil of fennel and spirit of peppermint in syrup. Absolute alcohol content about 5 per cent. USES: Complex and misnamed cathartic, imitating a widely advertised "patent medicine." DOSAGE: 4 Cc. or 1 fluidrachm (N.F.). _*Syrupus Sennae (Syr. Senn.), Syrup of Senna, U.S.P._--Fluidextract of senna (25%) and oil of coriander in syrup. Absolute alcohol content about 5 per cent. DOSAGE: 4 Cc. or 1 fluidrachm (U.S.P.). _Syrupus Sennae Aromaticus (Syr. Senn. Arom.), Aromatic Syrup of Senna, N.F._--Fluidextract of senna (12.5%), jalap (5%), rhubarb (1.75%), Saigon cinnamon, clove, nutmeg, oil of lemon and sugar in diluted alcohol. Absolute alcohol content about 30 per cent. DOSAGE: 8 Cc. or 2 fluidrachms (N.F.). _Syrupus Sennae Compositus (Syr. Senn. Co.), Compound Syrup of Senna, N.F._--Fluidextract of senna (13.5%), fluidextract of rhubarb (3.5%), fluidextract of frangula (3.5%), methyl salicylate (0.4%) and alcohol in syrup. Absolute alcohol content about 13 per cent. USES: Complex and irrational cathartic. DOSAGE: 8 Cc. or 2 fluidrachms (N.F.) =Serpentaria (Serpent.), Serpentaria, U.S.P.= (Texas Snakeroot, Virginia Snakeroot).--Rhizome and root. ACTION AND USES: Bitter with no advantage over gentian; now less frequently used than formerly. DOSAGE: 1 Gm. or 15 grains (U.S.P.). _Fluidextractum Serpentariae (Fldext. Serpentar.), Fluidextract of Serpentaria, N.F._--Serpentaria (100%). Absolute alcohol content about 70 per cent. DOSAGE: 1 Cc. or 15 minims. _Tinctura Serpentariae (Tr. Serpent.), Tincture of Serpentaria, N.F._--Serpentaria (20%) in alcohol and water. Absolute alcohol content about 60 per cent. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.) =*Serum Antidiphthericum (Ser. Antidiph.), Antidiphtheric Serum, U.S.P.= (Diphtheria Antitoxin).--Serum from a horse properly immunized against diphtheria toxin; has a potency of not less than 250 antitoxic units per Cc. ACTION AND USES: Curative and prophylactic agent in diphtheria. The possibility of serum disease must be remembered. Caution should be exercised when antidiphtheric serum is administered to persons who have had asthma, and, above all, "horse asthma." In such cases a few drops only of the serum may be injected, followed in fifteen or thirty minutes by the full dose. DOSAGE: Curative, 10,000 units (U.S.P.); protective, 1,000 units (U.S.P.); both hypodermic.