TRACT 36.

THE WHIRLING-MACHINE.

175

May 10, 1786.

Barometer 29'60; Thermometer-

17. The large hemisphere with the round side again. Themotion was always uniform after the first or second turn.The number of turns always 15, and the medium of the last12 uniform turns is set down here below opposite the cor-responding weights, the same as was done every day, andthe titles of the columns being the same as in the foregoingtable.

We

ght

Time

Weight

Time

We

ght

Time

Weight

Time

OZ

dr

sec

oz

dr

sec

OZ

dr

1

sec

oz

dr

see

8

5

4 1

Tj-t

9

n

9 ~

o Tl

13

12

3 x -

0 IT

15

8

0 t 0z Ti'

3

8

4 1

10

1

•4 s_

J Ti

14

0

3

16

0

2 t 9 -

•'ll

8

12

4

10

8

14

5

3

16

8

O 9-TT

9

0

<2 1 1

11

0

3-^

*^ 12 .

14

10

Oti

Z TT

17

0

2 9W T 2

9

6

Q 1 O°TT

13

8

S 1

°1T

15

0

Oil

17

8

9 s

May 11 , 1786.

Barometer 29'64 ; Thermometer 60.

18. The large hemisphere again with the round side:every thing else as on the last day.

Wt.

Time

Wt.

Time

Wt.

Time

Wt.

Time

OZ

sec

OZ

sec

OZ

sec

OZ

sec

IS

2-67

28

2-12

38

1-79

58

1-46

19

2-58

29

2-10

40

1-75

60

1-42

20

2-50

30

2*

42

1-75

64

1-33

21

2-42

.31

2‘

44

1-67

68

1-33

22

2-42

32

2-

46

1-58

72

1-29

23

2-33

33

1-92

48

1-54

76

1-25

24

2-25

34

1-92

50

1-54

80

1-21

25

2-25

35

1-83

52

1-50

84

1" 17

26

2-25

36

1-83

54

1-50

88

1T7

27

2-17

37

1-83

56

1-50

92

1-13

With the next weight, viz, 96 ounces, the silk thread broketwice: so that 96 oz, or 6 lb, was just the limit of its strength.It was not woven, but only a twisted cord, framed like a rope,of 3 strands; and was of 3 % of an inch in diameter.