(d) Marble, breccia, and onyx, wholly or partly manufactured into monuments, benches, vases, and other articles, and articles of which these substances or any of them is the component material of chief value, not specially provided for, 50 per centum ad valorem..

PAR. 233. [Marble, breccia, onyx, alabaster,] Alabaster and jet, wholly or partly manufactured into monuments, benches, vases, and other articles, and articles of which these substances or [any] either of them is the component material of chief value, and all articles composed wholly or in chief value of agate, rock crystal, or other semiprecious stone, except such as are cut into shapes and forms fitting them expressly for use in the construction of jewelry, not specially provided for, 50 per centum ad valorem.

PAR. 234. Burrstones, manufactured or bound up into millstones, 15 per centum ad valorem.

PAR. 235. (a) Granite suitable for use as monumental, paving, or building stone, not specially provided for, hewn, dressed, pointed, pitched, lined, or polished, or otherwise manufactured, 60 per centum ad valorem; unmanufactured, or not dressed, pointed, pitched, lined, hewn, or polished, 25 cents per cubic foot.

(b) Travertine stone, unmanufactured, or not dressed, hewn, or polished, 25 cents per cubic foot.

(c) Freestone, [granite,] sandstone, limestone, lava, and all other stone suitable for use as monumental or building stone, except marble, breccia, and onyx, not specially provided for, hewn, dressed, or polished, or otherwise manufactured, 50 per centum ad valorem; unmanufactured, or not dressed, hewn, or polished, 15 cents per cubic

foot.

PAR. 236. Grindstones, finished or unfinished, $1.75 per ton.

PAR. 237. [Slates] Slate, slates, slate chimney pieces, mantels, slabs for tables, roofing slates, and all other manufactures of slate, not specially provided for, 15 per centum ad valorem.

PAR. 238. Watch crystals or watch glasses, finished or unfinished, 60 per centum ad valorem.

SCHEDULE 3.-METALS AND MANUFACTURES OF

PAR. 301. Iron in [pigs,] pigs and iron kentledge, $1.122 per ton; spiegeleisen containing more than 1 per centum of carbon, 75 cents per ton; wrought and cast scrap iron, and scrap steel, [valued at not more than 7 cents per pound,] 75 cents per ton: Provided, That spiegeleisen for the purposes of this Act shall be an iron manganese alloy containing less than 30 per centum of manganese: Provided further, That nothing shall be deemed scrap iron or scrap steel except secondhand or waste or refuse iron or steel fit only to be remanufactured: Provided further, That an additional duty of $1 per pound on the vanadium content in excess of one-tenth of 1 per centum, 72 cents per pound on

the tungsten content in excess of two-tenths of 1 per centum, 65 cents per pound on the molybdenum content in excèss of two-tenths of 1 per centum, and 4 cents per pound on the chromium content in excess of two-tenths of 1 per centum, shall be levied, collected, and paid on all the foregoing.

PAR. 302. (a) Manganese ore or concentrates containing in excessof 30 per centum of metallic manganese, 1 cent per pound on the metallic manganese contained therein.

(b) Molybdenum ore or concentrates, 35 cents per pound on the metallic molybdenum contained therein.

(c) Tungsten ore or concentrates, [45] 50 cents per pound on the metallic tungsten contained therein.

(d) Ferromanganese containing more than 1 per centum of carbon, 1% cents per pound on the metallic manganese contained therein: Provided, That ferromanganese for the purposes of this Act shall be such iron manganese alloys as contain 30 per centum or more of manganese.

(e) Manganese metal, manganese silicon, manganese boron, and ferromanganese and spiegeleisen containing not more than 1 per centum of carbon, 1% cents per pound on the manganese contained therein and 15 per centum ad valorem.

(f) Ferromolybdenum, metallic molybdenum, molybdenum powder, calcium molybdate, and all other compounds and alloys of molybdenum, 50 cents per pound on the molybdenum contained therein and 15 per centum ad valorem.

(g) Ferrotungsten, metallic tungsten, tungsten powder, tungstie acid, and all other compounds of tungsten, 60 cents per pound on the tungsten contained therein and 25 per centum ad valorem.

(h) Ferrochromium tungsten, chromium tungsten, chromium cobalt tungsten, tungsten nickel, and all other alloys of tungsten not specially provided for, 60 cents per pound on the tungsten contained therein and 25 per centum ad valorem.

(i) Ferrosilicon, containing 8 per centum or more of silicon and less than 60 per centum, 2 cents per pound on the silicon contained therein; containing 60 per centum or more of silicon and less than 80 per centum, 3 cents per pound on the silicon contained therein; containing 80 per centum or more of silicon and less than 90 per centum, 4 cents per pound on the silicon contained therein; containing 90 per centum or more of silicon, and silicon metal, 8 cents per pound on the silicon contained therein.

(j) Silicon aluminum, aluminum silicon, alsimin, ferrosilicon aluminum, and ferroaluminum silicon, 5 cents per pound.

(k) Ferrochrome or ferrochromium containing 3 per centum or more of carbon, 31⁄2 cents per pound on the chromium contained therein; ferrochrome or ferrochromium containing less than 3 per centum of carbon, and chrome metal or chromium metal, 30 per centum ad valorem.

(1) Boron carbide, chromium carbide, vanadium carbide, chromium nickel, chromium silicon, chromium vanadium, and manganese copper, 25 per centum ad valorem.

(m) Ferrophosphorus, ferrotitanium, ferrovanadium, ferrouranium, ferrozirconium, zirconium, ferrosilicon, ferroboron, ferroaluminum vanadium, ferromanganese vanadium, ferrosilicon vanadium, and ferrosilicon aluminum vanadium, 25 per centum ad valorem. [titanium, zirconium, chromium nickel, vanadium nickel, zirconium nickel, chromium vanadium, chromium silicon, zirconium silicon, calcium silicide,]

(n) Barium, boron, calcium, columbium or niobium, strontium, thorium, titanium, uranium, vanadium, zirconium, alloys of two or more of these metals, or alloys not specially provided for of one or more of these metals with one or more of the metals aluminum, chromium, cobalt, copper, manganese, nickel, or silicon, 25 per centum ad valorem. [and] (0) [all] All alloys used in the manufacture of steel or iron, not specially provided for, 25 per centum ad valorem.

(p) Cerium metal, $2 per pound.

(q) Ferrocerium and all other cerium alloys, $2 per pound and 25 per centum ad valorem.

(r) Ductile tantalum metal or ductile nonferrous alloys of tantalum metal, 40 per centum ad valorem.

PAR. 303. Muck bars, pieces thereof except crop ends, bar iron, and round iron in coils or rods, iron in slabs, blooms, loops, or other forms less finished than iron in bars and more advanced than pig iron, except castings; granular or sponge iron; all [of] the foregoing, valued at not over 1 cent per pound, two-tenths of 1 cent per pound; valued above 1 cent and not above 12 cents per pound, three-tenths of 1 cent per pound; valued above 11⁄2 and not above 21⁄2 cents per pound, five-tenths of 1 cent per pound; valued above 21⁄2 and not above 32 cents per pound, eight-tenths of 1 cent per pound; valued above 31⁄2 and not above 5 cents per pound, 1 cent per pound; valued above 5 cents per pound, 12 cents per pound.

PAR. 304. Steel ingots, cogged ingots, blooms and slabs, by whatever process made; die blocks or blanks; billets and bars, whether solid or hollow; shafting; pressed, sheared, or stamped shapes, not advanced in value or condition by any process or operation subsequent to the process of stamping; hammer molds or swaged steel; gun-barrel molds not in bars; [alloys not specially provided for used as substitutes for steel in the manufacture of tools;] concrete reinforcement bars; all descriptions and shapes of dry sand, loam, or iron molded steel castings; sheets and plates and steel not specially provided for; all [of] the foregoing valued at not over 1 cent per pound, two-tenths of 1 cent per pound; valued above 1 cent and not above 12 cents per pound, three-tenths of 1 cent per pound; valued above 11⁄2 and not

above 22 cents per pound, five-tenths of 1 cent per pound; valued above 22 and not above 31⁄2 cents per pound, eight-tenths of 1 cent per pound; valued above 31⁄2 and not above 5 cents per pound, 1 cent per pound; valued above 5 and not above 8 cents per pound, 10 cents per pound; valued above 8 and not above 12 cents per pound, 21⁄2 cents per pound; valued above 12 and not above 16 cents per pound, 32 cents per pound; valued above 16 cents per pound, 20 per centum ad valorem: Provided, That on steel circular saw plates there shall be levied, [collected] collected, and paid an additional duty of one-fourth of 1 cent per pound: Provided further, That on hollow bars and hollow drill steel valued at more than 4 cents per pound there shall be levied, collected, and paid an additional duty of 10 cents per pound.

PAR. 305. In addition to the rates of duty provided for in paragraphs 303, 304, 307, 308, 312, 313, 315, 316, 317, 318, 319, 322, 323, 324, 327, and 328 of this schedule [on steel in all forms and shapes, by whatever process made, and by whatever name designated, whether cast, hot or cold rolled, forged, stamped, or drawn, containing more than six-tenths of 1 per centum of nickel, cobalt, vanadium, chromium, tungsten, molybdenum, or any other metallic element used in alloying steel], there shall be levied, collected, and paid on all steel or iron, in all forms and shapes, by whatever process made, and by whatever name designated, whether cast, hot or cold rolled, forged, stamped, or drawn:

(1) A duty of 8 per centum ad valorem if such steel or iron contains more than one-tenth of 1 per centum of vanadium, or more than two-tenths of 1 per centum of tungsten, molybdenum, or chromium, or more than six-tenths of 1 per centum of nickel, cobalt, or any other metallic element used in alloying steel or iron: Provided, That phosphorus shall not be considered as alloying material unless present in the steel or iron in excess of 5 per centum, nor shall manganese [and] or silicon [shall not] be so considered [as alloying material] unless either is present in the steel in excess of 1 per centum [manganese or silicon: Provided further, That an] or unless either is present in the iron in excess of 3 per centum; and

(2) an additional cumulative duty of $1 per pound on the vanadium content in excess of one-tenth of 1 per centum, [65 cents per pound on the molybdenum content in excess of six-tenths of 1 per centum, and] 72 cents per pound on the tungsten content in excess of [sixtenths] two-tenths of 1 per centum, 65 cents per pound on the molybdenum content in excess of two-tenths of 1 per centum, and 4 cents per pound on the chromium content in excess of two-tenths of 1 per centum. [shall be levied, collected, and paid on any material provided for in paragraph 304 containing molybdenum and tungsten.]

PAR. 306. All metal produced from iron or its ores, which is cast and malleable, of whatever description or form, without regard to the percentage of carbon contained therein, whether produced by

cementation, or converted, cast, or made from iron or its ores, by the crucible, electric, Bessemer, Clapp-Griffith, pneumatic, ThomasGilchrist, basic, Siemens-Martin, or open-hearth process, or by the equivalent of either, or by a combination of two or more of the processes, or their equivalents, or by any fusion or other process which produces from iron or its ores a metal either granular or fibrous in structure, which is cast and malleable, excepting what is known as malleable-iron castings, shall be classed and denominated as steel. PAR. 307. Boiler or other plate iron or steel, except crucible plate steel and saw plate steel, not thinner than one hundred and nine one-thousandths of one inch, cut or sheared to shape or otherwise, or unsheared, and skelp iron or steel sheared or rolled in grooves, valued at 1 cent per pound or less, seven-twentieths of 1 cent per pound; valued above 1 cent per pound and not above 3 cents per pound, five-tenths of 1 cent per pound; valued at over 3 cents per pound, 20 per centum ad valorem: Provided, That all sheets or plates of iron or steel thinner than one hundred and nine one-thousandths of one inch shall [pay] be subject to duty as iron or steel sheets.

PAR. 308. Sheets of iron or steel, common or black, of whatever dimensions, and skelp iron or steel, valued at 3 cents per pound or less, thinner than one hundred and nine one-thousandths and not thinner than thirty-eight one-thousandths of [an] one inch, fortyfive one-hundredths of 1 cent per pound; thinner than thirty-eight one-thousandths and not thinner than twenty-two one-thousandths of [an] one inch, fifty-five one-hundredths of 1 cent per pound; thinner than twenty-two one-thousandths and not thinner than ten one-thousandths of [an] one inch, seventy-five one-hundredths of 1 cent per pound; thinner than ten one-thousandths of [an] one inch, eighty-five one-hundredths of [a] 1 cent per pound; corrugated or crimped, seventy-five one-hundredths of 1 cent per pound; all the foregoing when valued at more than 3 cents per pound, 20 per centum ad valorem: Provided, That all sheets or plates of common or black iron or steel not thinner than one hundred and nine one-thousandths of [an] one inch shall [pay] be subject to duty as plate iron or plate steel.

PAR. 309. All iron or steel sheets, plates, bars, and rods, and all hoop, band, or scroll iron or steel, excepting what are known commercially as tin plates, terneplates, and taggers tin, when galvanized or coated with zinc, spelter, or other metals, or any alloy of those metals, shall [pay] be subject to two-tenths of 1 cent per pound more duty than if the same was not so galvanized or coated; sheets or plates composed of iron, steel, copper, nickel, or other metal with layers of other metal or metals imposed thereon by forging, hammering, rolling, or welding, 30 per centum ad valorem; thermostatic

54590 H. Doc. 23, 71-1-3