27. verso

Wrapper labelled ‘Intensité magnétique. Formules et théorie’ (Carton 14, Dossier 280 A-B-C)

Wrapper front inside cover for ‘Intensité magnétique. Formules et théorie’ (Carton 14, Dossier 280 A-B-C)

Wrapper (Dossier 280 A-B), containing items 1-15

Wrapper front insider cover for (Dossier 280 A-B), containing items 1-15

1. ‘Formules pour l’intensité magnétique’ (Dossier 280 A-1)

1. verso

1. blank

2. ‘Calculs pour la détermination de l’ëquateur magnétique’ (Dossier 280 A-2)

2. verso

3. ‘Variations Diurnes en Déclinaison magnétique’ (Dossier 280 A-3)

3. verso (Dossier 280 A-3)

4. ‘Magnétisme’ and ‘Observations magnétiques’ (Dossier 280 A-4 and A-5)

4. verso showing original pin

4. verso

5. ‘Magnétisme thèorie’ (Dossier 280 A-6)

5. verso

6. ‘Magnétisme’ (Dossier 280 A-7)

7. ‘Magnétisme thèorie’ (Dossier 280 A-8)

7. verso

8. ‘Magnétisme thèorie’ (Dossier 280 A-9)

8. verso

9. ‘Intensité magnétique’ (Dossier 280 B-1)

9. verso

10. ‘Intensité magnétique’ (Dossier 280 B-2)

11. ‘Intensité magnétique’ p. 1 (Dossier 280 B-3)

11. verso

12. Notes beginning ‘Mr Hansteen (Savant Suédois)...’ p. 2 (Dossier 280 B-4)

12. verso

13. ‘Intensité magnétique’ p. 3 (Dossier 280 B-5)

13. verso

14. ‘Magnétisme; formules diverses’ p. 4 (Dossier 280 B-6)

14. ‘Magnétisme; formules diverses’ p. 5 (Dossier 280 B-6)

15. ‘Peut-on répondre de 2. dans la direction de la route de Vaisseau?’ p. 6 (Dossier 280 B-7)

15. verso

Wrapper endpage

Wrapper endpage verso

Wrapper labelled ‘Uranie; magnétisme – papiers superflus et partant inutiles' (Dossier 280 C) containing items 16-29

Wrapper inside cover for Dossier 280 C

16. ‘Observateurs, pendant le Voyage de l’Uranie’ (fragment)

16. verso

17. ‘Extraits d’observations envoyées de Parramatta (Nlle Hollande) à l’Académie des Sciences de Paris’

17. verso

18. ‘Formule pour la Latitude’

19. Manuscript note beginning ‘Port-Louis...’

19. verso

19. blank

20. ‘Déclinaisons de la boussole’

20. verso

20. blank

21. Manuscript note beginning ‘1. Lorsque l’aiguille est face au N...’

21. verso

21. blank

22. ‘Régle pour conclure la valeur et la direction de la déclinaison de la boussole’

22. verso

23. ‘Division du magnétisme’

23. verso

24. ‘Remarques sur l’instalation de la boussole marine d’inclinaison’ p. 1

24. verso

25. ‘Remarques sur les aiguilles de la boussole marine d’inclinaison’ p. 2

25. verso

26. ‘Manière d’observer la boussole marine d’inclinaison’ p. 3

26. verso

27. Manuscript note beginning ‘Le défaut...’

28. ‘Observations faites près de l’équateur magnétique’

28. verso

29. ‘Note sur la correction des inclinaisons observées sans changer les poles’

29. verso showing original pin

29. verso

Freycinet family aggregated collection of papers chiefly from the Archives de Laage

A dossier of 29 documents containing Louis de Freycinet’s working notes, sketches and calculations concerning magnetism.
In wrapper labelled ‘Intensité magnétique. Formules et théorie’ (with Laage archive stamp: Carton 14, Dossier 280 A-B-C).

Wrapper (with Laage archive stamp, Dossier 280 A & B), containing the following items 1-15:
1. ‘Formules pour l’intensité magnétique’ [1828 or earlier] (1 page on a folded sheet, with Laage archive stamp, Dossier 280 A-1). A later pencil note in Freycinet’s hand comments that these notes were discussed with François Arago on 9 January 1828.
2. ‘Calculs pour la détermination de l’ëquateur magnétique’ (1 page, with Laage archive stamp, Dossier 280 A-2), being a sheet of calculations.
3. ‘Variations Diurnes en Déclinaison magnétique’ (2.5 pages on a single folded sheet, with Laage archive stamp, Dossier 280 A-3), being thoughts on the methods of ‘Mr Macdonal’ [John Macdonald, who studied diurnal variation in Sumatra], and the way in which the observations made by Freycinet confirm his theory. Explains how and when he made his observations, including at Timor, Port Jackson and Hawaii.
4. ‘Magnétisme’ and ‘Observations magnétiques’ (2 sheets pinned together with original hand-made pin, with Laage archive stamp, Dossier 280 A-4 and A-5), being working notes relating to Louis de Freycinet’s draft for the volume on Magnétisme Terrestre in the official account.
5. ‘Magnétisme théorie’ (1 page, with Laage archive stamp, Dossier 280 A-6), being notes for the Magnétisme Terrestre volume, with reference to Humboldt and Biot, Journal de Physique, de chimie et d’histoire naturelle, 17 December 1804, p. 431.
6. ‘Magnétisme’ (2 page fragment on a single sheet, with Laage archive stamp, Dossier 280 A-7), being notes and calculations.
7. ‘Magnétisme théorie’ (1 page, with Laage archive stamp, Dossier 280 A-8), being notes on oscillation, with some corrections.
8. ‘Magnétisme théorie’ (1 page, with Laage archive stamp, Dossier 280 A-9), being notes on coarse laid paper.

9. ‘Intensité magnétique’ (1 page, with Laage archive stamp, Dossier 280 B-1), being notes on the order to follow in calculations of magnetism, including additional marginal comment about the Uranie.
10. ‘Intensité magnétique’ (1.5 pages, with Laage archive stamp, Dossier 280 B-2), being detailed workings, with several corrections and marginal annotations.
11. ‘Intensité magnétique’ p. 1 (1 page, with Laage archive stamp, Dossier 280 B-3), being notes and extracts, with corrections and diagrams.
12. Notes beginning ‘Mr Hansteen (Savant Suédois)...’ p. 2 (1 page, with Laage archive stamp, Dossier 280 B-4), being calculations and diagrams relating to the work of Christopher Hansteen [a Norwegian astronomer (1784-1873) who worked on the mapping of Earth’s magnetic field], heavily annotated.
13. ‘Intensité magnétique’ p. 3 (1 page, with Laage archive stamp, Dossier 280 B-5), being a sheet of calculations, with two small diagrams.
14. ‘Magnétisme; formules diverses’ pp. 4 & 5 (2 pages, with Laage archive stamp, Dossier 280 B-6), being a sheet of calculations relating to measurements at the equator, with one very finely worked diagram.
15. ‘Peut-on répondre de 2. dans la direction de la route de Vaisseau?’ p. 6 (1 page, with Laage archive stamp, Dossier 280 B-7), being Freycinet’s notes on the question of how and why the direction of the vessel affects measurements.

Wrapper labelled ‘Uranie; magnétisme – papiers superflus et partant inutiles' (with Laage archive stamp, Dossier 280 C) containing the following items 16-29:
16. ‘Observateurs, pendant le Voyage de l’Uranie’ (fragment), listing the abbreviations used for the 13 officers on board the Uranie as they appear in the tables. The list, which includes Freycinet himself, Duperrey and Pellion, was printed in the Magnétisme Terrestre volume (1842), p. 8.
17. ‘Extraits d’observations envoyées de Parramatta (Nlle Hollande) à l’Académie des Sciences de Paris’ (1 page) being a sheet summarising the years when observations were sent by various people, including Cook, Dalrymple, King and Blosseville (covering the period 1766-1828).
18. ‘Formule pour la Latitude’ (2 pages on a small single sheet) with a diagram on verso.
19. Manuscript note beginning ‘Port-Louis...’ (1 page on a single folded sheet), being brief notes relating to observations made on the Uranie voyage in Port Louis, Coupang, Rawak, Guam, Port Jackson and Rio de Janeiro.
20. ‘Déclinaisons de la boussole’ (1 page on a single folded sheet), being the measurements for February 1818 showing, on various days, the observed or estimated variations. [In February 1818 the Uranie was in the Atlantic Ocean].
21. Manuscript note beginning ‘1. Lorsque l’aiguille est face au N...’ (1 page on a single folded sheet), being notes on the magnetic needle, with a diagram.
22. ‘Régle pour conclure la valeur et la direction de la déclinaison de la boussole’ (1 page), being a rough sheet of notes on reading the compass, with simple diagram.
23. ‘Division du magnétisme’ (1 page), being notes on the first chapter of the Magnétisme Terrestre.
24. ‘Remarques sur l’instalation de la boussole marine d’inclinaison’ p. 1 (1 page), being a draft note for inclusion in the text of the Magnétisme Terrestre.
25. ‘Remarques sur les aiguilles de la boussole marine d’inclinaison’ p. 2 (1 page), being an additional draft note for inclusion in the text of the Magnétisme Terrestre.
26. ‘Manière d’observer la boussole marine d’inclinaison’ p. 3 (1 page), being a draft note for inclusion in the text of the Magnétisme Terrestre.
27. Manuscript note beginning ‘Le défaut...’ (two smaller sheets glued together to make a single sheet), being a note heavily crossed through, with a detailed diagram of the mechanism of the needle.
28. ‘Observations faites près de l’équateur magnétique’ (1 page), being a table of observations as recorded between Hawaii and Port Jackson (6-13 October 1819).
29. ‘Note sur la correction des inclinaisons observées sans changer les poles’ (3 pages pinned together with original hand-made pin), including a very rough draft and a more polished document, with diagram.

File 3: Dossier concerning magnetism and observations during the Uranie voyage, written on board the Uranie and in France

27. verso

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