tj6 Of the'sßecific Gravities of Bodies.

in by weights in the opposite scale: then, pour the quicksilver intothe bücket in the vvater, which will cause it to preponderate; andput as much weight-into the opposite scale as will restore the balanceto an equipoise j and this weight will be the weight of a quantity ofwatet equal inbulk to the qnicksilver. Lastly, divide the weight of theqnicksilver in air, by the weight of its bulk of water, and the quotientwill fhew how much the qnicksilver is heavier than its bulk of vvater.

If a piece of brass, glafs, lead, or silver, be immersed and suspendedin different sorts of fluids, dts different losses of weight therein willfhew how much it is heavier than its bulk of the fluid; the'fluid be-•ing lightest, in which the immersed body loses least of its aerial weight.A solid bubble of glase is generally used for finding the speci sic gravi-ties of fluids.

Hence we have an easy method of finding the specisic gravities both.of solids and fluids, with regard to their respective bulks of common

' A Table of the specisic gravities of severa! solid and fluid bodies.

Troy weight.

Avoirdup.

Compa-

A cubic inch of

—

—

--

rative

oz.

pw.

g r -

02.

drams.

weight.

Very fine gold —

—

IO

7

3- 8 S

1

5.80

19-637

Standard gold —

—

9

*9

6-44

10

14.90

18.888

Guinea gold -—

9

7

17.18

10

4.76

17-793

Moidore gold — —

9

o

19.84

9

14-71

17.140

Quicksilver -

—

7

7

11.61

8

i-45

14.019

Lead -- —

5

i9

l 7-55

6

9.08

11-325

Fine silver —— —

5

i6

23- 2 3

6

6.66

11.087

Standard silver —

5

i r

3-36

6

i-54

10-535

Copper - —

4

l 3

7-04

5

1.89

8.843

Piate brass -

—

4

4

9.60

4

10.09

8.000

Steel —— —

4

2

20.12

4

8.70

7.852

Iron -- —

4

O

15.20

4

6.77

7-645

Block tin -

—

3

i7

5.68

4

3-79

7-321

Speltar —

—

3

14

12.86

4

1.42

7.065

Lead ore — —

3

11

17.76

3

14.96

6.800

Glase of antimony

—

2

15

16.89

3

0.89

5.280

German antimony

-—

2

2

4.80

2

5.04

4.000

Copper ore -

—

2

1

11.83

2

4-43

3-775

Diamond -- —

'—

I

*5

20.88

1

15.48

3.400

Ciear glase >—

—

I

*3

5-58

i

13.16

3-i5o

Lapis lazuli —

—

I

12

5-27

1

12.27

3-054

Welch asbestos —

I

IO

1 7*57

1

io-97

2.913

pump