A TABLE, exhibiting the different Variations of the Magnetic Needle in the more frequented Oceans, from the Years 1700 to the Year 1756.

152

Lati- Longitude,

VARIATION.

from

tude.

Anno Anno

Anno

Anno

London. 1700.

1710. 1720.

1730.

Anno Anno
1744.
1756.

tude.

Lati- Longitude,
from
London.

VARIATION.

Anno
1700.

Anno Anno Anno Anno

Anno 1710. 17:20. 1730. 1744. 1756.

25 N 30 w

Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees

4 w 7w

45 N

20 w

7 w

11 w 14 w 16 w

25 N 35 w

1 w

1w 2 w

2 w

7w

11w 14 w 16 w

Of w

2ł w

3 w

11w 134 w 15 w

25 N 45 w

25 N 50w

112w 13ł w 15ł w

OE

12 w 13 w 15 w

25 N 60 w

122 w 13ł w 15 w

2 E

13 w 14 w 16 w

14 w 15ł w 17 w

45 N

60 w 13 w

14 w 16 w 18 w

25 N 80 w

5w 7w

4

17 w 194 w

33 E 3 E

50 N

10 w

7w

174 w 19ł w

7w 6 w

25 N 65 E

8 w

17 w 20 w

9w

7w

6 w 4w

50 м

25 N 70E

10 w

Sw

20 w

114 w 13 w

44 w

101 w 12 w

10 w 13ł w 15 w

8ł w 12 w

2 w

8w 11 w 13 w

5 s

30 N 25 w

2w 3w

5w

w 10 w

3 w 4w6w9 10 w

30 N 30 w

2 w

3 w

3w

4ł w

5w 9w

1w 3 w 4w 6w 8 w

5 s

30 N 35 w

24w 2 w

3w

3w

4w 7 w

5 s

30 N 40 w

2 w

3 w

3w 5 w

25 W

24 E

5s

30 N 45 w

2 w

24w

24w 4w

5 s

30 N 50 w

1 w

lw

2 w 3 w

35 W

4 E

30 N 55 w

w1w

12 w 15 w 16 w

5 s

30 N 60 W

10 E

7 w

1w 1 w

144 w 16 w 17 w

5 s

30 N 65 W

40 E

5 s

14 E

1 E

45 E

5 s

50 E

E 0

5 s

9w12w 14 w

18 w 172 w 172 w 17 w 17 w 18 w

18w 18 w 18 w

18 W 17 w 17 w

55 E 17 W 16 w 150w

60 E 16 w 144 w 13ł w

17ł w 17 w 16 w

161 w 15 w 12 w

14w 13 w 9ł w 12 w 10 w 6 w 9w 7w 4w

9ł w 11 w 13 w

5 s

70 E

13 W 11 w

9w

6

64w 4w 3 w

84 w 10 w 13 w

5 s

75E 11 w 9w

7w

35 N 25 w

3w 4w6w7w9w12w

5 s

5 w

35 N 30 w

3w 4w 5w 6w 8 w 10 w

58

35 N 35 w

3w 4w 54w6w 7w 8 w

5 s

90 E

35 N 40 w

3w 4 w 4w 5ł w 6w 7w

3 w

3w

1 w

1 w

2 ww

35 N 45 w

3 w

3w 4w 4w5w 64 w

35 N 50w

1 w 2 w 18 w

3w 4w 4w5w 5 w

35 N 55 w

3 w

3w 4 w 44w 4w5w

9w 12 w 14 w

10 s

3w 4 w 44W 5 w 51 w

84w 10 w 12 w

35 N 65 w

10 s

3 w

5w6w

10 w

4w

8ł w 10ł w

10 s

15 w

35 N 70w

1 E

2 w

5 w 6 w

2

4 w

5w 7w

35 N 75 W

2 w

6 w 7 w

O E

O w 2 w

10 w 13ł w 15 w

10 s

30 w

4 E

3 E

10 w 12 w 14) w

10 w 12ł w 144 w

12 w 14 w 15 w

9w 114 w 13 w

40 N 30w

14 w 16 w 163 w

9 w 10ł w 12 w

15 w 174 w 17 w

40 N 35 w

5w 6w

7w

8ł w 9w 11 w

10 s

40 N 40w 5w6w

w 18 w 19 w 19ł w

7w

8 w 9w 10 w

10 s

40 N 45 w

6 w

45 B

19 w 19ł w 19

w 18 w 18 w 18 w

7w8w9w

10 s

50E

40 N 50 w

194 w 19 w 18

6 w

w 17 w 16 w 14 w

40 N 55 w

6 w

74w8w9w

7w 8 w 10 w

8 w 9ł w 11 w

10 s

55 E

18w 17 w 16

w 150w 14 w 10 w

10 s

60 E

17 w 16 w 15 w 14 w 11w 7w

15 w 13 w 112 w 10 w

40 N 65w

8 w 5 w

7w

8 w 10ł w 12 w

144 w 12 w 10 w

8 w 5 w 3 w

40 N 70w 7 w

9 w 11 w 123 w

123 w 10 w 9w

5w 3w 2 w

-2 w 15 w 16 w

10 s

80 E

10 W 8 w

5w

VARIATION. Anno Anno Anno Anno 1720. 1730. 1744. 1756. Degrees Degrees Degrees Degrees Degrees Degrees Degrees Degrees 35 $

5w 7 w 8 w 10 w

35S 90 E

Degrees Degrees Degrees Degrees Degrees Degrees 13ł w 13 w 12 w 12 w 12 w 12 w 11 w 11 w 11 w 11 w 10 w

Variation of the Magnetic-Needle, from the Islands of Orkney to Hudson's

Straits, for the Year 1757.

20 W

8 E

1 w

E

40s 25 w 103 E

30 w 12 Е

5 E

4 w

10 E

74 w

15 E

40s 20 E

40s 25 E

16 w

40 $ 30 E

19 w

40s 35 E

40s 40 E

23ł w

Variation in Hudson's Bay and Straits, for the Year 1757.

Degrees of West
Variation.

Degrees of North Latitude.

52 55

56

57 58 59 60 61 62

63

39 40 41

41 41

43

38

39 40

18

20

39

40

35

37

17

17

17

18

18

We have been informed, that in Hudson's Bay, there has been very little alteration in the variation of the compass during the 20 years last past

XLII. Of some Extraordinary Tumors on the Head of a Labouring Man in St Bartholomew's Hospital. By James Parsons, M. D., F. R. S. p. 350. This poor man, whose name was John Tomlinson, gave this account of himself: that he was about 25 years of age : that when he was a boy of 4 or 5 years old at play with other children, he received a blow from one of them on the top of his head, and believes that hurt he then received was the beginning of the tumours. The tumour on the top of his head however grew first, and after having spread all over the vertex, extended gradually downwards over his right shoulder, and forwards over the os frontis, on the same side, till it stretched downwards into a lax flabby substance all over the right side of his face and shoulder: then the upper of three anterior tumours arose from the large one; the middle one from the ala nasi, pulling it down by its weight: and the lower one was pendulous from the inside of the great tumour by a narrow neck. These were the appearances which presented themselves at first sight; but those under the great tumour were no less extraordinary; for on lifting up the great tumour, and Jooking up under it, his right eye came in sight, with which he saw very well, and the eye was clear and sound; but the under lid was pulled down and stretched to 6 or 7 inches long, to which a tumour hung also, as large as that anterior one at the chin, the lowest of the three; besides several flaps and rugæ of skin and smaller tumours.

The hairy scalp was so stretched by the vertical tumour, that the hairs were driven asunder; so that the tumour was in some places bald, and the whole was rugged and uneven. At its basis all round, till arriving at the extended part that went away to the right shoulder, a bony edge might be distinctly felt, as if the skull was depressed at the top: and yet probably there was no depression of the arch of the inner table, because the man was from his childhood ever very healthy; being never troubled with those symptoms which usually attend a depression of the cranium. From this seeming edge the os frontis shot out a great way over the ossa nasi, perhaps to 2 or 3 inches beyond the frontal sinuses; and was the basis from which the great pendulous tumour hung downwards and forwards.

From the root of the nose under the upper of the 3 smaller tumours arose a large trunk of a vein, which ramified up to the vertical tumour, and to the right over the upper part of the great pendulous one: these were very conspicuous, and served to bring back the residual blood from the tumours: nor was it unlikely that the arteries bore a proportion with these veins in their size, in order to supply the tumours with the matter which had given them their great increas; but these lying concealed, could not be spoken to with any certainty.

x 2