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Link: • Nicolaus Joseph, baron von Jacquin to Carl Linnaeus, 30 April 1760 n.s.
Dated . Sent from ? () to ? (). Written in Latin.


Nicolaus Joseph 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.
thanks Linnaeus for a letter (17 March 1760)Letter L2696 that awaited him when he returned to the city and for the seeds enclosed in that. Most of those species were new to the botanical garden in Vienna (Jacquin refers to the Botanical Garden of the University of Vienna, founded in 1754). He had then delayed his answer since he waited for another letter from Linnaeus, which had arrived the day before.

Jacquin had recently sent Johan Frederik GronoviusGronovius, Johan Frederik
(1690-1762). Dutch. Naturalist, senator
of Leiden. Linnaeusís benefactor and
friend. Published Flora Virginica
(1743, 1762) together with John Clayton.
Correspondent of Linnaeus.
an index of the new plants he had found in America (Jacquin refers to Enumeratio systematica plantarumJacquin, Nicolaus Joseph, baron von
Enumeratio systematica
plantarum, quas in insulis Caribaeis
vicinaque Americes continente detexit
novas, aut jam cognitas emendavit

(Leiden 1760).
). Gronovius would publish it in Leiden. In that index, Jacquin had applied Linnaeusís method as practiced in Systema naturae, 10th editionLinnaeus, Carl Systema
, 10th edition (Stockholm
1758-1759). Soulsby no. 58.
. In addition, Jacquin stresses that he is always very careful in publishing only what he has seen with his own eyes, as he has seen many examples of mistakes in early literature. Jacquin admits that he may be mistaken in determining the plants and their names, but he does not report things that he has not seen by himself. Critics of the treatment by earlier scholars are exemplified in several species mentioned.

Jacquin asks Linnaeus not to judge the Austrian flora by Wilhelm Heinrich KramerísKramer, Wilhelm Heinrich
(?-1765). German. German-born Austrian
botanist and physician. Military surgeon
at Bruck a. Leitha. Correspondent of
list (Jacquin means Elenchus vegetabilium et animalium per Austriam inferiorem observatorumKramer, Wilhelm Heinrich
Elenchus vegetabilium et animalium
per Austriam inferiorem observatorum

(Vienna and Prague 1756).
). It is much richer than that.

Jacquin comments on Carduus mollis, which is not quite like Linnaeusís. The same is the case with a Silene species.

Jacquin thinks that Linnaeus has mixed up two species of Erysimum and asks some questions about Ornithogalum umbellatum and Selinum pumilum.

Jacquin gives a long and very vivid description of the small crab Cancer parasiticus. Then, he answers Linnaeusís request for a description of the Harpyja eagle, which he had in a cage in America. Jacquin describes it in great detail, also how he kept it, how he fed it and with what, its favourite foods, hens and monkeys etc.

Jacquin gives short descriptions of nine birds and a mammal similar to a monkey, large as a small cat. It is nocturnally active, herbivore and living in the forest in South America. He does not know its scientific name; the native name is Marta.

Jacquin reports that Amomum Zerumbet is flowering and asks for seeds of Linnaea borealis.

Jacquin has heard that a medal has been cast of Linnaeus and he wants a copy of it. He promises in return a silver medal with Gerhard van SwietenísSwieten, Gerhard van
(1700-1772). Dutch. Pupil of Boerhaave.
Called by Maria Theresa to Vienna, where
he organised the public health system.
Correspondent of Linnaeus.
portrait, of which he owns two copies.

Twenty-eight seeds of American plants are sent, and the species are listed. Most of the seeds have been sown successfully in the garden in Vienna.

Jacquin sends dried specimens of several plants, among them Cherleria, and asks for seeds and specimens of several species which he enumerates.

Jacquin sends a piece of a magnetic mineral from somewhere in Dominique. He describes the circumstances and the location where he found it. Even the soil from there is a little magnetic.

Jacquin is once more heading for the mountains near Vienna and promises more letters on new plants after he has returned.

Jacquin wants a specimen of Kiggelaria. He offers Linnaeus specimens of Austrian plants, and Linnaeus may just mention what he wants and Jacquin will get it for him sooner or later.

Jacquin gives a complete address to be used by Linnaeus in his letters and ends the letter with a question on two Euphorbia species occurring in the Austrian Alps.



a. original holograph (LS, VII, 314-316). [1] [2] [3]