I

TRACT 34. IN GUNNERY,

363

52. Wednesday, July 23, 1783 ; from 10 till 3.

Fine weather.

Barometer 29’85, Thermometer 70° at 4 P. M.

N°

Pow-

der

Ball’

S

Vibration of

Point

struck

! Plugs

Values of

Veloc.

ball

Wt

diam

gun

peiul

V

g

n

02

oz dr

aches

nches

nches

nches

in.

H>

inches

feet

1

2

2-5

2

2

2-5

3

4

5-7

4

4

5-7

5

8

130

6

8

12-9

7

16

25-9

8

16

26-6

9

16

21-9

10

16

265

11

16

16 13*

1.96

39-9

22’4

ST7

12

690’0

77-78

40-18

1693

12

16

16 12*

1’96

39’0

21-3

88’3

12

691-6

77-80

40-18

1610

13

16

16 13*

1-96

41’2

23-1

88*1

9

693-2

77 82

40-18

1736

14

16

16 12*

1-96

38-3

21-2

88-7

9

694-9

77-85

40-18

1603

15

8

16 13*

1-96

27-9

21’4

89-2

8

696-5

77-88

40-18

1607

16

8

16 12*

1-96

271

20’2

88-6

7

698-1

77-90

40-17

1538

n

8

16 13*

1-96

27-3

20-5

88’9

8

699-8

77-92

40-17

1553

18

4

16 1S>

1-96

16 8

15-1

88-0

1

701-4

7T94

40-17

1159

19

4

16 13*

1’96

16-7

14-7

88-3

6

703-0

7T96

40-17

1127

20

4*

16 13*

1-96

16-6

14-6

88-5

5

704-7

77-9y

40-17

1120

21

2

16 13*

1-96

9’5

9-4

88’6

4

706-3

78-01

40-16

722

22

2

16 13*

1-96

10-7

10-9

8T8

6

707-9

78-03

40-16

847

23

2

16 13*

1-96

9-6

9’4

88-5

5

709-6

78-05

40-16

727

21

2

16 13*

1-96

10-8

11-2

87-7

711-2

78-08

40-16

878

Length of charge of 2 oz was 2-1 inches4 - - 3-3

8 - - 6'116 - - 109

v