Par. 16. Calcium carbide, 1 cent per pound; calcium acetate, crude, 1 cent per pound; calcium oxalate, 4 cents per pound. Par. 17. Calomel, corrosive sublimate, and other mercurial preparations, 22 cents per pound and 25 per centum ad valorem. Par. 18. Carbon tetrachloride, 1 cent per pound; chloroform, 4 cents per pound; tetrachloroethane and trichloroethylene, 30 per centum ad valorem. Par. 19. Casein or lactarene and mixtures of which casein or lactarene is the component material of chief value, not specially provided for, 51⁄2 cents per pound. Par. 20. Chalk or whiting or Paris white: Dry, ground, or bolted, fourtenths of 1 cent per pound; precipitated, 25 per centum ad valorem; ground in oil (putty), three-fourths of ĺ cent per pound; put up in the form of cubes, blocks, sticks, or disks, or otherwise, including tailors', billiard, red, and manufactures of chalk not specially provided for, 25 per centum ad valorem. Par. 21. Chemical compounds, mixtures, and salts, of which gold, platinum, rhodium, or silver constitutes the element of chief value, 25 per centum ad valorem. Par. 22. Chemical compounds, salts, and mixtures of bismuth, 35 per centum ad valorem. Par. 23. Chemicals, drugs, medicinal and similar substances, whether dutiable or free, when imported in capsules, pills, tablets, lozenges, troches, ampoules, jubes, or similar forms, includ binations and mixtures of any of the foregoing, all the foregoing obtained naturally or artificially and not specially provided for, 25 per centum ad valorem. Par. 16. Calcium carbide, 1 cent per pound. Par. 5. All chemical elements, all chemical salts and compounds, all medicinal preparations, and all combinations and mixtures of any of the foregoing, all the foregoing obtained naturally or artificially and not specially provided for, 25 per centum ad valorem. Par. 1541. Calcium: Acetate, * * * Provided, That if any country, dependency, province, or other subdivision of government imposes a duty on calcium acetate, when imported from the United States, an equal duty shall be imposed upon such article coming into the United States from such country, dependency, province, or other subdivision of government. [Free]. Par. 17. Calomel, corrosive sublimate, and other mercurial preparations, 45 per centum ad valorem. Par. 18. Carbon tetrachloride, 2% cents per pound; chloroform, 6 cents per pound; tetrachloroethane and trichloroethylene, 35 per centum ad valorem. Par. 19. Casein or lactarene, 21⁄2 cents per pound. Par. 1459. That there shall be levied, collected, and paid on the importation of all * * * articles manufactured, in whole or in part, not specially provided for, a duty of 20 per centum ad valorem. Par. 20. Chalk or whiting or Paris white: Dry, ground, bolted, or precipitated, 25 per centum ad valorem; ground in oil (putty), three-fourths of 1 cent per pound; put up in the form of cubes, blocks, sticks, or disks, or otherwise, including tailors', billiard, red, and manufactures of chalk not specially provided for, 25 per centum ad valorem. Par. 21. Chemical compounds, mixtures, and salts, of which gold, platinum, rhodium, or silver constitutes the element of chief value, 25 per centum ad valorem. Par. 22. Chemical compounds, salts, and mixtures of bismuth, 35 per centum ad valorem. Par. 23. Chemicals, drugs, medicinal and similar substances, whether dutiable or free, when imported in capsules, pills, tablets, lozenges, troches, ampoules, jubes, or similar forms, includ ing powders put up in medicinal doses, shall be dutiable at not less than 25 per centum ad valorem. Par. 24. Chemical elements, and chemical and medicinal compounds, preparations, mixtures, and salts, distilled or essential oils, expressed or extracted oils, animal oils and greases, ethers and esters, flavoring and other extracts, and natural or synthetic fruit flavors, fruit esters, oils and essences, all the foregoing and their combinations when containing alcohol, and all articles consisting of vegetable or mineral objects immersed or placed in, or saturated with, alcohol, except perfumery and spirit varnishes, and all alcoholic compounds not specially provided for, if containing 20 per centum of alcohol or less, 20 cents per pound and 25 per centum ad valorem; containing more than 20 per centum and not more than 50 per centum of alcohol, 40 cents per pound and 25 per centum ad valorem; containing more than 50 per centum of alcohol, 80 cents per pound and 25 per centum ad valorem. Par. 25. Chicle, refined or advanced in value by drying, straining, or any other process or treatment whatever beyond that essential to the proper packing, 5 cents per pound. Par. 26. Chloral hydrate, terpin hydrate, thymol, and glycerophosphoric acid, and salts and compounds of glycerophosphoric acid, 35 per centum ad valorem; diethylbarbituric acid and salts and compounds thereof, $2.50 per pound; ethyl-hydrocupreine and salts and compounds thereof, 20 cents per ounce. Par. 27. Coal-tar products: (a) (1) Acetanilide not suitable for medicinal use, alphanaphthol, aminobenzoic acid, aminonaphthol, aminophenetole, aminophenol, aminosalicylic acid, aminoanthraquinone, aniline oil, aniline salt, anthraquinone, arsanilic acid, benzaldehyde not suitable for medicinal use, benzal chloride, benzanthrone, benzidine, benzidine sulfate, benzoic acid not suitable for medicinal 'See notes to pars. 1 and 5, Act of 1922. ing powders put up in medicinal doses, shall be dutiable at not less than 25 per centum ad valorem. Par. 24. Chemical elements, and chemical and medicinal compounds, preparations, mixtures, and salts, distilled or essential oils, expressed or extracted oils, animal oils and greases, ethers and esters, flavoring and other extracts, and natural or synthetic fruit flavors, fruit esters, oils and essences, all the foregoing and their combinations when containing alcohol, and all articles consisting of vegetable or mineral objects immersed or placed in, or saturated with, alcohol, except perfumery and spirit varnishes, and all alcoholic compounds not specially provided for, if containing 20 per centum of alcohol or less, 20 cents per pound and 25 per centum ad valorem; containing more than 20 per centum and not more than 50 per centum of alcohol, 40 cents per pound and 25 per centum ad valorem; containing more than 50 per centum of alcohol, 80 cents per pound and 25 per centum ad valorem. Par. 25. Chicle, * * *; refined or advanced in value by drying, straining, or any other process or treatment whatever beyond that essential to the proper packing, 15 cents per pound. * Par. 26. Chloral hydrate, terpin hydrate, thymol, * * and glycerophosphoric acid, and salts and compounds of glycerophosphoric acid, 35 per centum ad valorem. * * * Par. 1. * **; and all other acids not specially provided for, 25 per centum ad valorem. Par. 5. All chemical elements, all chemical salts and compounds, all medicinal preparations, and all combinations and mixtures of any of the foregoing, all the foregoing obtained naturally or artificially and not specially provided for, 25 per centum ad valorem. Par. 1649. Quinine sulphate and all alkaloids and salts of alkaloids derived from cinchona bark. [Free.] Par. 27. Coal-tar products: Acetanilide not suitable for medicinal use, alpha-naphthol, aminobenzoic acid, aminonaphthol, aminophenetole, aminophenol, aminosalicylic acid, aminoanthraquinone, aniline oil, aniline salt, anthraquinone, arsanilic acid, benzaldehyde not suitable for medicinal use, benzal chloride, benzanthrone, benzidine, benzidine sulfate, benzoic acid not suitable for medicinal use, benzoquinone, benzoyl chloride, benzyl chlo. ride, benzylethylaniline, beta-naphthol use, benzoquinone, benzoyl chloride, benzyl chloride, benzylethylaniline, beta-naphthol not suitable for medicinal use, bromobenzene, chlorobenzene, chlorophthalic acid, cinnamic acid, cumidine, dehydrothiotoluidine, diaminostilbene, dianisidine, dichlorophthalic acid, dimethyl aniline, dimethylaminophenol, dimethylphenylbenzylammonium hydroxide, dimethylphenylenediamine, dinitrobenzene, dinitrochlorobenzene, dinitronaphthalene, dinitrophenol, dinitrotoluene, dihydroxynaphthalene, diphenylamine, hydroxyphenylarsinic acid, metanilic acid, methylanthraquinone, naphthylamine, naphthylenediamine, nitroaniline, nitroanthraquinone, nitrobenzaldehyde, nitrobenzene, nitronaphthalene, nitrophenol, nitrophenylenediamine, nitrosodimethylaniline, nitrotoluene, nitrotoluylenediamine, phenylenediamine, phenylhydrazine, phenylnapthylamine, phenylglycine, phenylglycineortho-carboxylic acid, phthalic acid, phthalic anhydride, phthalimide, quinaldine, quinoline, resorcinol not suitable for medicinal use, salicylic acid and its salts not suitable for medicinal use, sulfanilic acid, thiocarbanilide, thiosalicylic acid, tetrachlorophthalic acid, tetramethyldiaminobenzophenone, tetramethyldiaminodiphenylmethane, toluene sulfochloride, toluene sulfonamide, tribromophenol, toluidine, tolidine, tolylenediamine, xylidine, anthracene having a purity of 30 per centum or more, carbazole having a purity of 65 per centum or more, naphthalene which after the removal of all water present has a solidifying point of seventy-nine degrees centigrade or above; all the foregoing products in this paragraph whether obtained, derived, or manufactured from coal tar or other source; (2) all distillates (except those provided for in subparagraph (b)) of coal tar, blast-furnace tar, oil-gas tar, and water-gas tar, which on being subjected to distillation yield in the portion distilling below one hundred and ninety degrees centigrade a quantity of tar acids equal to or more than 5 per centum of the original distillate or which on being subjected to distillation yield in the portion distilling below two hundred and fifteen degrees centigrade a quantity of tar acids equal to or more than 75 per centum of the original distillate; (3) all products, by whatever name known, which are similar to any of the products provided for in this paragraph or in paragraph 1651, and which are obtained, derived, or manufactured in whole or in part from any of the prod 8 not suitable for medicinal use, bromobenzene, chlorobenzene, chlorophthalic acid, cinnamic acid, cumidine, dehydrothiotoluidine, diaminostilbene, dianisidine, dichlorophthalic acid, dimethylaniline, dimethylaminophenol, dimethylphenylbenzylammonium hydroxide, dimethylphenylenediamine, dinitrobenzene, dinitrochlorobenzene, dinitronaphthalene, dinitrophenol, dinitrotoluene, dihydroxynaphthalene, diphenylamine, hydroxyphenylarsinic acid, metanilic acid, methylanthraquinone, naphthylamine, naphthylenediamine, nitroaniline, nitroanthraquinone, nitrobenzaldehyde, nitrobenzene, nitronaphthalene, nitrophenol, nitrophenylenediamine, nitrosodimethylaniline, nitrotoluene, nitrotoluylenediamine, phenol, phenylenediamine, phenylhydrazine, phenylnaphthylamine, phenylglycine, phenylglycineortho-carboxylic acid, phthalic acid, phthalic anhydride, phthalimide, quinaldine, quinoline, resorcinol not suitable for medicinal use, salicylic acid and its salts not suitable for medicinal use, sulfanilic acid, thiocarbanilide, thiosalicylic acid, tetrachlorophthalic acid, tetrame thyldiaminobenzophenone, tetramethyldiaminodiphenylmethane, toluene sulfochloride, toluene sulfonamide, tribromophenol, toluidine, tolidine, tolylenediamine, xylidine, anthracene having a purity of 30 per centum or more, carbazole having a purity of 65 per centum or more, metacresol having a purity of 90 per centum or more, naphthalene which after the removal of all water present has a solidifying point of seventy-nine degrees centigrade or above, orthocresol having a purity of 90 per centum or more, paracresol having a purity of 90 per centum or more; all the foregoing products in this paragraph whether obtained, derived, or manufactured from coal tar or other source; all distillates of coal tar, blast-furnace tar, oil-gas tar, and water-gas tar, which on being subjected to distillation yield in the portion distilling below one hundred and ninety degrees centigrade a quantity or tar acids equal to or more than 5 per centum of the original distillate ' or which on being subjected to distillation yield in the portion distilling below two hundred and fifteen degrees centigrade a quantity of tar acids equal to or more than 75 per centum $20 per centum ad valorem on American selling price and 31⁄2 cents per pound, by Presidential proclamation, effective Nov. 30, 1927, under sec. 315. Cresylic acid, 20 per centum ad valorem on American selling price and 31⁄2 cents per pound by Presidential proclamation, effective Aug. 19, 1927, under sec. 315. ucts provided for in this paragraph or in paragraph 1651; (4) all mixtures, including solutions, consisting in whole or in part of any of the foregoing products provided for in this paragraph, except sheep dip and medicinal soaps; (5) all the foregoing products provided for in this paragraph, not colors, dyes, or stains, color acids, color bases, color lakes, leuco-compounds, indoxyl, indoxyl compounds, ink powders, photographic chemicals, medicinals, synthetic aromatic or odoriferous chemicals, synthetic resinlike products, synthetic tanning materials, or explosives, and not specially provided for in paragraph 28 or 1651, 40 per centum ad valorem and 7 cents per pound. (b) Metacresol having a purity of 90 per centum or more, orthocresol having a purity of 90 per centum or more, paracresol having a purity of 90 per centum or more, phenol, carbolic acid which on being subjected to distillation yields in the portion distilling below one hundred and ninety degrees centigrade a quantity of tar acids equal to or more than 5 per centum of the original distillate, 10 cresylic acid which on being subjected to distillation yields in the portion distilling below two hundred and fifteen degrees centigrade a quantity of tar acids equal to or more than 75 per centum of the original distillate, and any mixture of any of the foregoing products with any of the products provided for in paragraph 1651, 20 per centum ad valorem and 31⁄2 cents per pound. (c) The ad valorem rates provided in this paragraph shall be based upon the American selling price (as defined in subdivision (g) of section 402, Title IV), of any similar competitive article manufactured or produced in the United States. If there is no similar competitive article manufactured or produced in the United States then the ad valorem rate shall be based upon the United States value, as defined in subdivision (e) of section 402, Title IV. (d) For the purposes of this paragraph any coal-tar product provided for in this Act shall be considered similar to or competitive with any imported coal-tar product which accomplishes results substantially equal to those accomplished by the domestic product when used in substantially the the same manner. 10 See note to this paragraph, p. 7, supra. of the original distillate; all similar products by whatever name known, which are obtained, derived, or manufactured in whole or in part from any of the products provided for in this paragraph, or from any of the products provided for in paragraph 1549; all mixtures, including solutions, consisting in whole or in part of any of the foregoing products provided for in this paragraph, except sheep dip and medicinal soaps; all the foregoing products provided for in this paragraph, not colors, dyes, or stains, color acids, color bases, color lakes, leuco-compounds, indoxyl, indoxyl compounds, ink powders, photographic chemicals, medicinals, synthetic aromatic or odoriferous chemicals, synthetic resinlike products, synthetic tanning materials, or explosives, and not specially provided for in paragraph 28 or 1549, 40 per centum ad valorem based upon the American selling price (as defined in subdivision (f) of section 402, Title IV) of any similar competitive article manufactured or produced in the United States, and 7 cents per pound: Provided, That for a period of two years beginning on the day following the passage of this Act the ad valorem rate of duty shall be 55 per centum instead of 40 per centum. If there is no similar competitive article manufactured or produced in the United States then the ad valorem rate shall be based upon the United States value, as defined in subdivision (d) of section 402, Title IV. For the purposes of this paragraph any coal-tar product provided for in this Act shall be considered similar to or competitive with any imported coal-tar product which accomplishes results substantially equal to those accomplished by the domestic product when used in substantially the same manner: Provided, That no duty imposed under this paragraph shall be increased under the provisions of section 315. [Last proviso not in act of 1930.] Par. 28. Coal-tar products. (a) All colors, dyes, or stains, whether soluble or not in water, except those provided for in subparagraph (b), color acids, color bases, color lakes, leucocompounds, whether colorless or not, indoxyl, and indoxyl compounds; ink powders; photographic chemicals; acetanilide suitable for medicinal use, acetphenetidine, acetylsalicylic acid, antipyrine, benzaldehyde suitable for medicinal use, benzoic acid suitable for medicinal use, beta-naphthol suitable for medicinal use, guaiacol and its derivatives, phenolphthalein, resorcinol suitable for medicinal use, salicylic acid and its salts suitable for medicinal use, salol, and other medicinals; sodium benzoate; saccharin; artificial musk, benzyl acetate, benzyl benzoate, coumarin, diphenyloxide, methyl anthranilate, methyl salicylate, phenylacetaldehyde, phenylethyl alcohol, and other synthetic odoriferous or aromatic chemicals, including flavors, all these products not marketable as perfumery, cosmetics, or toilet preparations, and not mixed and not compounded, and not containing alcohol; synthetic phenolic resin and all resin-like products prepared from phenol, cresol, phthalic anhydride, coumarone, indene, or from any other article or material provided for in paragraph 27 or 1651, all these products whether in a solid, semisolid, or liquid condition; synthetic tanning materials; picric acid, trinitrotoluene, and other explosives except smokeless powders; all the foregoing products provided for in this paragraph, when obtained, derived, or manufactured in whole or in part from any of the products provided for in paragraph 27 or 1651; natural alizarin and natural indigo, and colors, dyes, stains, color acids, color bases, color lakes, leucocompounds, indoxyl, and indoxyl compounds, obtained, derived, or manufactured in whole or in part from natural alizarin or natural indigo; natural methyl salicylate or oil of wintergreen or oil of sweet birch; natural coumarin; natural guaiacol and its derivatives; vanillin, from whatever source obtained, derived, or manufactured; and all mixtures, including solutions, consisting in whole or in part of any of the articles or materials provided for in this paragraph, excepting mixtures of synthetic odoriferous or aromatic chemicals, 45 per centum ad valorem and 7 cents per pound. (b) Synthetic indigo, "Colour Index No. 1177", and sulphur black, "Colour Index No. 978", 3 cents per pound and 20 per centum ad valorem. (c) The ad valorem rates provided in this paragraph shall be based upon the Par. 28. Coal-tar products: All colors, dyes, or stains, whether soluble or not in water, color acids, color bases, color lakes, leuco-compounds, whether colorless or not, indoxyl and indoxyl compounds; ink powders; photographic chemicals; acetanilide suitable for medicinal use, acetphenetidine, acetylsalicylic acid, antipyrine, benzaldehyde suitable for medicinal use, benzoic acid suitable for medicinal use, beta-naphthol suitable for medicinal use, guaiacol and its derivatives, phenolphthalein, resorcinol suitable for medicinal use, salicylic acid and its salts suitable for medicinal use, salol, and other medicinals; sodium benzoate; saccharin; artificial musk, benzyl acetate, benzyl benzoate, coumarin, diphenyloxide, methyl anthranilate, methyl salicylate, phenylacetaldehyde, phenylethyl alcohol, and other synthetic odoriferous or aromatic chemicals, including flavors, all of these products not marketable as perfumery, cosmetics, or toilet preparations, and not mixed and not compounded, and not containing alcohol; synthetic phenolic resin and all resin-like products prepared from phenol, cresol, phthalic anhydride, coumarone, indene, or from any other article or material provided for in paragraph 27 or 1549, all of these products whether in a solid, semisolid, or liquid condition; synthetic tanning materials; picric acid, trinitrotoluene, and other explosives except smokeless powders; all of the foregoing products provided for in this paragraph, when obtained, derived, or manufactured in whole or in part from any of the products provided for in paragraph 27 or 1549; natural_alizarin and natural indigo, and colors, dyes, stains, color acids, color bases, color lakes, leucocompounds, indoxyl, and indoxyl compounds, obtained, derived, or manufactured in whole or in part from natural alizarin or natural indigo; natural methyl salicylate or oil of wintergreen or oil of sweet birch; natural coumarin; natural guaiacol and its derivatives; and all mixtures, including solutions, consisting in whole or in part of any of the articles or materials provided for in this paragraph, excepting mixtures of synthetic odoriferous or aromatic chemicals, 45 per centum ad valorem based upon the American selling price (as defined in subdivision (f) of section 402, Title IV) of any similar competitive article manufactured or produced in the United States, and 7 cents per pound: Provided, That for a period of two years beginning on the day following the passage of this Act the ad valorem rate of duty shall be 60 per centum instead of 45 per centum. If there is no similar competitive article manufac |