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Link: • Carl Linnaeus to Carl Gustaf Tessin, 28 November 1755 n.s.
Dated 1755 d. 28 Nov.. Sent from Uppsala (Sweden) to Stockholm (Sweden). Written in Swedish.


Linnaeus thanks Carl Gustaf TessinTessin, Carl Gustaf
(1695-1770). Swedish. Count, important
politician and patron of science and
art. He supported Swedish artists and
scientists and collected art, books and
natural history objects. He assisted
Linnaeusís career in many ways. Married
to Lovisa Ulrica Tessin. Uncle to
Fredrik Sparre. Correspondent of
for his letter [Tessin to Linnaeus, 27 November 1755Letter L1967].

Linnaeus comments on Tessinís plans to write about Nummus Brattenburgensis and states that it can be found in fossils in Skåne. Franciscus Ernst BrückmannBrückmann, Franciscus Ernst
(1697-1753). German. Naturalist and
collector. Physician at Helmstädt,
later at Brunswick and
Wolffenbüttel. Father-in-law of
Friedrich Boerner. Correspondent of
has got a pair in Germany but Linnaeus does not know if anybody has fetched them. Nobody has seen them alive, although they belong to the turtle family and are now classified as inter deperditos.

Linnaeus thought he was the only owner in the world of both shells; Nummus Brattenburgensis, like Pectines, has two different shells, one is conical and the other the ordinary Nummus Brattenburgensis.

Linnaeus asks Tessin to ask the following questions if he writes to England:

1. If this Nummus Brattenburgensis in the corals was an original or a fossil? In the latter case it is not so unusual.
2. If this Nummus Brattenburgensis has its two shells.
3. If this is the case, please ask for more details about the second shell or a drawing. Maybe the whole thing is a fake as can already be found in His Majestyís [Adolf FredrikAdolf Fredrik, (1710-1771).
Swedish. King of Sweden. Reigned
1751-1771. Married to Lovisa Ulrika.
Father of Gustav III. Chancellor of
Uppsala university 1747-1751.
Correspondent of Linnaeus.
] collection of corals. If the two shells are alike the whole thing is wrong.

Linnaeus informs Tessin that he has the second shell in Fauna SvecicaLinnaeus, Carl Fauna Svecica
sistens animalia Sveciae regni:
quadrupedia, aves, amphibia, pisces,
insecta, vermes, distributa per classes
& ordines, genera & species. Cum
differentiis specierum, synonymis
autorum, nominibus incolarum, locis
habitationum, descriptionibus
(Stockholm, 1746).
Soulsby no. 1151.
, Sp. 1347, tab. 2. Fig.δ ε, and he does not think that the English are aware of this fact.

Linnaeus praises Tessin for his contribution to science.


a. original holograph (RA, Ericsbergsarkivet, Autografsamlingen, vol. 132, Nr. 12). [1] [2] [3] [4]


1. Svenska arbeten (1878), vol. 1, p. 31-33   p.31  p.32  p.33.