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Link: • Carl Linnaeus to Nicolaus Joseph, baron von Jacquin, December 1759 n.s.
Dated . Sent from () to Wien (Austria). Written in Swedish.


Linnaeus expresses his thanks for the letter of 14 November 1759Letter L2617 and flatters Nicolaus Joseph von JacquinJacquin, Nicolaus Joseph, baron von
(1727-1817). Dutch. Botanist. In
1755 at the order of emperor Franz I of
Austria he went to the Antilles and
South America. In 1763 he became
professor of mineralogy and chemistry at
Chemnitz, later professor of botany at
Vienna and director of the botanical
garden at Schönbrunn. Correspondent
of Linnaeus.
for his deep knowledge of plants and species.

In addition to about 30 comments and answers to detailed questions from Jacquin in earlier letters, Linnaeus advises Jacquin to be very careful and not decide on new species except in manifest situations. A variation between individuals can very often be explained and should be recognized.

Linnaeus regrets that Jacquin does not have access to vol. 2 of Systema naturae, 10th editionLinnaeus, Carl Systema
, 10th edition (Stockholm
1758-1759). Soulsby no. 58.
, that would help him very much in his examination of plants.

Linnaeus does not dare to decide on Jacquin’s questions on plants that Linnaeus has not seen himself and that have been incompletely described in previous literature.

Linnaeus asks Jacquin if he has made any observations on birds, fishes, insects and amphibia in America. Linnaeus adds that he had just received very nice specimens of such from elsewhere.

Finally, Linnaeus reports that he had received from Arnout VosmaerVosmaer, Arnout (1720-1799).
Dutch. Director of the cabinet of
natural history of the prince of Orange
at the Hague. Correspondent of Linnaeus.
in the Hague a copy of a treatise by Paul Heinrich Gotthard Moehring’sMoehring, Paul Heinrich Gerhard
(1710-1792). German. East Frisian
ornithologist, practising physician at
Jever (Oldenburg). Correspondent of
Avium generaMoehring, Paul Heinrich Gerhard
Avium genera (Auricae 1752).
, translated into Flemish and commented, [Linnaeus refers to Geslachten der VogelenMoehring, Paul Heinrich Gerhard
Geslachten der Vogelen, uit het latyn
vertaald, en met Aantekeningen
vermeerderd door C. Nozeman, [...] met
eene Vooreden, Aantekeningen en Naamlyst
der voornaamste Schryveren die over de
Vogelen geschreeven hebben, vermeerderd
door A. Vosmaer
( Amsterdam 1758).
], and asks Jacquin if he wants to have a copy of a dissertation with the title Flora JamaicensisLinnaeus, Carl Flora
diss., resp. C. G.
Sandmark (Uppsala [1759]). Soulsby no.



a. original holograph (UUB, G152g). [1] [2]


1. Caroli Linnaei epistolae ad Nicolaum Josephum Jacquin (1841), p. 11-14   p.11  p.12  p.13  p.14.