Lbs.

Copper, wrought..............

34000

" rolled..........................

36000

" cast, American.......

" wire.............

" bolt..................

36800

Iron, cast, Low Moor, No. 2

14076

" Clyde, No. 1...............

16125

" " No. 3...........

23468

" Calder, No. 1.................

13735

" Stirling, mean................

25764

" mean of American.....

31829

" mean* of English........

19484

" Greenwood, Amer'n..

45970

" gun-metal. mean.......

37,232

" wronght wire.............

103000

" best Swedish bar........

72000

" Russian bar............

59500

" English bar..........

60000

" rivets, American...........

53300

" bolts.............................

52250

" hammered..................

53013

" mean of English.......

53900

" rivets, English

65000

" crank shaft................

44750

" turings.........................

55800

" plates, boiler,

American

48000

62000

Lbs.

Iron plates, mean, English

51000

" " lengthwise..........

68800

" " crosswise..............

48800

" inferior, bar............

30000

" wire, American.....

73600

16 diam

80000

" scrap....................

53400

Lead, cast................

1800

milled.....................

3320

" wire..............

2580

Platinum, wire..............

53000

Silver, cast....................

40000

Steel, cast, maximum........

142000

" " mean............

88867

" blistered, soft........

13000

104000

" shear.......................

124000

" chrome, mean..............

170980

" puddled, extreme...

173817

" American Tool Co...

179980

" plates, lengthwise...

96300

" " crosswise.....

08700

" razor...............

160000

Tin, cast, block.............

6000

" Banca...................

2122

Zinc..........................

3500

" sheet.........................

16000