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Report on the variations of the magnetic intensity observed at different points of the earth's surface / by Major Edward Sabine
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SEVENTH REPORT 18 . 3 /Table II.

Monterey = 1 * 000 .

Fort Vancouver = 1*000.

Place.

Horiz. Int.

Place.

Horiz. Int.

Stuarts Lake .

Frazers Lake .

Fort Alexandria ...Thompsons River

Oakanagau .

San F. Solano .

San Jose .

La Soledad .

San Antonio .

San Miguel ...

0-5616

0-5719

0-6015

0-6415

0-7165

0-9721

0-9859

1-0056

1-0080

1-0101

1-0222

1-0413

1-0335

1-0282

Mouth oftheWul- \

lawullah .J

Rapids of the Co- 1

lumbia .j

South branch oflthe Multnomah JSandiam River.

0-9790

1-0000

1-0163

1-0463

London =1*000.

Santa Barbara ......

Santa Ynez .

La Purissima .

Oahu .

Kiraueah .

1-758

1-762

Table III.

Place.

Lat.

Long, westfrom

Greenwich .

Date.

Computed

dip.

IntensityLondon = 1*372.

Stuart's Lake .

o /

54 27

ll4

20

June,

1833

76 09

1-745

Frazer's Lake ............

54 03

124

40

June,

1833

75 48

1-734

Fort Alexandria .

52 33

122

29

May,

1833

74 50

1-714

Thompson's River .

50 41

120

11

April,

1833

73 43

1-701

Oakanagan .

48 05

119

27

April,

1833

71 45

1-701

River Wullawullah..

46 03

118

48

July,

1830

70 14

1-699

Rapids of the Columbia

45 40

121

48

Sept.,

1830

69 27

1-671

River Multnomah .

45 15

122

47

Aug.,

1830

68 57

1-660

River Sandiam..

44 35

122

27

Aug.,

1830

68 28

1-672

St. Francisco Solano ...

38 17

122

24

July,

1831

63 24

1-614

San Jos6 .

37 32

122

00

July,

1831

62 52

1-607

La Soledad .

36 24

121

24

April,

1831

62 04

1-596

San Antonio .

36 01

121

18

April,

1831

61 46

1-584

San Miguel .

35 45

121

00

April,

1831

61 40

1-580

San Obispo ...

35 16

120

40

May,

1831

61 17

1-581

Santa Barbara .

34 25

119

40

May,

1831

60 48

1-587

Santa Ynez ...

34 36

120

11

May,

1831

60 53

1-579

La Purissima .

34 40

120

27

May,

1831

60 53

1-571

Sandwich Islands .

Oahu ...

21 18

158

0

May,

1830

41 39

1-116

Crater of Kiraueah.

19 0

March,

1824

38 00

1-059

The latitudes in this table, and the longitudes of the stations on the River Co-lumbia and its tributaries are from Mr. Douglass observations. The longitudesare chronometrical, from Fort Vancouver as a first meridian. The longitude ofFort Vancouver is computed from 1200 lunar distances observed by him. A fewof these were computed on the spot, but all were fully recorded; and have beencalculated since his papers arrived in England.