Substances.

Height in feet.

Weight in lbs.

Ash...................

4,970,000

1,656,670

Brass, yellow...

2,460.000

8,464,000

" wire....

4,112,000

14,632,720

Copper, cast......

4,800.000

18,240,000

Eim................

5,680.000

1,499,500

Fir, red.............

8,330,000

2,016,000

Glass....................

4,440.000

5,559,000

Gun metal ......

2,790,000

8,844,300

Hempen fibres.

5 000.000

170,000

Ice....................

6.000,000

2,370,000

Iron, cast.........

5,780900

25,820,000

" wrought......

7,650,000

28,230,500

" wire.........

8,377,000

28,230,500

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

146,000

720,000

Substances.

in feet.

Weight

Lignum-vitae ...

1,080,400

1,080,400

Linestone........

2,400,000

3,300,000

Mahogany.........

6,570,000

2,071,000

Marble, white...

2,150,000

2,508,000

Oak...................

4,750,000

1,710,000

Pine, Pitch............

8,700,000

2,430,000

" White......

8,900.000

1,830,000

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

8,530,000

26,650,000

" wire......._

9.000.090

28,689,000

Stone, Portland

1,672,000

1,718,800

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

1,053,000

3,510,000

Willow............

6,200,000

1,426,000

V. 1. Pine, mean

10,500,000

2,100,000

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

4,480,000

13.440,000

The elasticity of Ivory, as compared to Glass, is as .93 to 1.