Neither Rose de Freycimet’s journal nor the letters to her mother provide a complete account of her voyage but, by the greatest of good fortunes, they do when put together. Moreover, for the latter part of the stay in Sydney, and for the voyage as far as Dili, we have both letters and the journal. Where they overlap, the letters have been neglected in favour of the journal, but was that the right thing to do? A question that can be answered only by comparing the two. But therein lies an additional problem.

After the deaths of the two eldest de Freycinet brothers, Alexandre Dezos de La Roquette wrote a joint obituary and summary of their lives for the Bulletin de la Société de Géographie. He included in it, in a long footnote that extended over parts of four pages, a summary of the life of Rose de Freycinet.

If the length of time the Uranie spent in a port is compared with the amount of space Rose gave to the visit in her diary or letters, then the stay in Dili is a stand-out item. For this the credit must go to its Portuguese governor, Don José Pinto Alcoforado de Azevedo e Sousa.

When Isidore Duperrey took the Coquille out of Toulon, he took with him several of those who had sailed with the Uranie and had returned on the Physicienne. They included Auguste Bérard and the master-gunner Rolland, and one other who might not have been expected to be there.

The sequence of events during the visit of the Uranie to Shark Bay is outlined in Gaimard’s diary. Gaps in this narrative can be filled by reference to accounts prepared by other members of the expedition.

In 1831 Dumont Durville made a contribution to the Bulletin of the Société de Géographie that was billed as a book review. It began, however, not with a discussion of the book in question but with an extended rant against the French naval establishment.

In finding a place to stay in Rio de Janeiro, Rose and Louis de Freycinet were indebted to a “M. Taunay,, the son of a painter and a member of the Institute’s Academy of Fine Arts, whose name and works are well known in Europe”. But who was this friend in need?

When, on the 13th of June 1820, Rose de Freycinet stepped ashore for the second time in Rio de Janeiro, she became just the second women to make a complete circuit of the globe. The Australian author Suzanne Falkiner has recognised the need for a biography and has filled it with a handsome volume simply entitled Rose.

The Internet is a treasure trove for the early publications on the Uranie voyage but, like all good hidden treasures, there are many obstacles to their retrieval. Digital images of the volumes of the ‘Voyage autour du Monde’ can be found, but quality is very variable and not all volumes are easy to find. There are, moreover, some issues surrounding the contents of the various volumes and their the dates of publication.

Rose de Freycinet sent letters to her mother on every occasion when there was some prospect of their reaching France, up to and including the stay in Sydney. She continued to write after that, but we know this only because she mentioned sending a letter from the Falklands in her diary. A copy of a letter from her to her parennts-in-law sent at the same time has survived.