# Observations of the Variation on Board the Royal African Pacquet, in 1721. By Capt. Cornwall

**Author(s):** Capt. Cornwall  
**Year:** 1722  
**Journal:** Philosophical Transactions (1683-1775)  
**Volume:** 32  
**Pages:** 3 pages  
**Identifier:** jstor-103573  
**JSTOR URL:** <https://www.jstor.org/stable/103573>  

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I. Observations of the Variation on board the Royal African Pacquet, in 1721. By Capt. Cornwall.

N. B. The Meridional Distance is reckon'd from St. Jago.

| Month and Year | Latitudes | Meridian Distance | Longitude | Variation |
|---------------|-----------|------------------|-----------|-----------|
| August 24th   | 9° 8' S. | 9° 23' W.        | 9° 25' W. | 2° 13' E. |
| 1721          |           |                  |           |           |
| Ditto         | 26° 11° 12' S. | 10° 46' W. | 10° 50' W. | 4° 30' E. |
| Ditto         | 27° 11° 34' S. | 11° 28' W. | 11° 41' W. | 4° 29' E. |
| Ditto         | 28° 12° 32' S. | 11° 31' W. | 11° 43' W. | 4° 27' E. |
| Ditto         | 31° 15° 46' S. | 10° 53' W. | 11° 6' W. | 6° 10' E. |
| September 2d  | 16° 26' S. | 8° 25' W. | 8° 30' W. | 7° 16' E. |
| Ditto         | 5th 18° 45' S. | 9° 31' W. | 9° 39' W. | 6° 17' E. |
| Ditto         | 6° 19° 47' S. | 9° 10' W. | 10° 0' W. | 8° 6' E. |
| Ditto         | 17° 28° 43' S. | 1° 7' W. | 1° 9' E. | 5° 53' E. |
| Ditto         | 22° 31° 33' S. | 3° 41' E. | 3° 56' E. | 4° 10' E. |
| Ditto         | 27° 33° 30' S. | 11° 29' E. | 12° 57' E. | 0° 11' W. |
| Ditto         | 30° 32° 40' S. | 19° 6' E. | 12° 1' E. | 3° 0' W. |
| October 1st   | 32° 53' S. | 21° 18' E. | 24° 59' E. | 5° 41' W. |
| Ditto         | 3° 32° 30' S. | 25° 33' E. | 30° 0' E. | 7° 47' W. |
| Ditto         | 5° 32° 28' S. | 30° 37' E. | 35° 52' E. | 8° 44' W. |
| Ditto         | 6° 31° 22' S. | 31° 40' E. | 37° 7' E. | 10° 57' W. |
| Ditto         | 7° 31° 11' S. | 32° 4' E. | 37° 47' E. | 11° 20' W. |

Obser-
Observations on the Coast of Africa.

| Month and Year | Latitudes | Meridian Distance | Longitud. Variation |
|----------------|-----------|------------------|--------------------|
| October 13th, 1721 | 26° 17' S | 35° 35' E | 41° 41' E | 14° 30' W |
| Ditto          | 19° 19' S |                |                    | 12° 22' W |
| Ditto          | 21° 17' S |                |                    | 14° 29' W |
| Ditto          | 25° 13' S |                |                    | 14° 48' W |
| November 4th, 1721 | 10° 57' S |                |                    | 13° 11' W |
| Ditto          | 7° 8' S   |                |                    | 15° 14' W |
| Ditto          | 29° 50' S in Cabenda-Bay |                |                    | 14° 33' W |

From Cabenda to London, Merid. Distance from thence.

| December 9th, 1721 | 3° 25' S | 11° 30' W | 11° 43' W | 11° 32' W |
| Ditto              | 14° 30' S | 21° 18' W | 21° 24' W |            |
| Ditto              | 20° 30' S | 30° 41' W | 30° 46' W | 1° 5' W    |
| January 1721       | 1° 10' N | 39° 8' W  | 39° 16' W | 1° 1' E    |
| Ditto              | 6° 17' N | 43° 21' W | 43° 29' W | 1° 41' E   |