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Link: • Carl Linnaeus to Cadwallader Colden, [15 September 1747] n.s.
Dated Undated but written in September 1747. Sent from Uppsala (Sweden) to New York (USA). Written in Latin.


A month ago Linnaeus sent a letter and a few dissertations to Cadwallader ColdenColden, Cadwallader
(1688-1776). American. Physician of
Scottish origin, botanist, physicist,
politician. Lieutenant governor of New
York. Correspondent of Linnaeus.
with a clergyman [presumably Johan SandinSandin, Johan (?-1748).
Swedish. Clergyman in New Jersey.
Husband of Anna Margareta Sandin in her
first marriage.
] going back to Pennsylvania [Linnaeus to Cadwallader Colden, 17 August 1747Letter L0825]. Linnaeus hopes they arrived safely.

One of Linnaeus’s most excellent students ever, Pehr KalmKalm, Pehr (1716-1779).
Swedish. Botanist and traveller,
professor of natural history at
Åbo. Disciple of Linnaeus.
Travelled in North America 1748-1751.
Correspondent of Linnaeus.
, now professor of Åbo, is on his way to North America. Linnaeus begs Colden to do everything he can to support this splendid man. Colden should invite him to read all his [Colden’s] observations and take advantage of his scientific skill and wide competence. Kalm will show him Linnaeus’s new 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.
which Colden has probably never seen. No man has given Linnaeus as much pleasure as Colden.

Linnaeus has read a thousand times the characters of his plants which have been forwarded by Johan Frederik GronoviusGronovius, Johan Frederik
(1690-1762). Dutch. Naturalist, senator
of Leiden. Linnaeus’s benefactor and
friend. Published Flora Virginica
(1743, 1762) together with John Clayton.
Correspondent of Linnaeus.
. Linnaeus wishes he could see dry seeds of them, especially of those that are not represented in Flora VirginicaGronovius, Johan Frederik
Flora Virginica, exhibens plantas
quas v.c. Johannes Clayton in Virginia
observavit atque collegit. Easdem
methodo sexuali disposuit, ad genera
propria retulit, nominibus specificis
insignavit, & minus cognitas
descripsit J. F. Gronovius
, I-II
(Leiden 1739-1743).
. If Colden is willing, Linnaeus will gladly publish them in the same way as it was done with John Clayton’sClayton, John (1685-1773).
British/American. Physician and
botanist. Born i England, moved to
Virginia in North America in 1715. His
herbarium collected in Virginia was
published by Johan Frederik Gronovius
and Linnaeus in Flora Virginica
(1739, 1743). Correspondent of Linnaeus.
Flora Virginica [Linnaeus here refers to the forthcoming catalogued collection of plants brought together, in the surroundings of Colden’s country seat, Coldengham, and communicated to Linnaeus, who published them under the title “Plantae Coldenhamiae"Colden, Cadwallader “Plantae
Coldenhamiae in provincia noveboracensi
americes sponte crescentes,"
Acta Societatis Regiae Scientiarum
(1743, [1749]), 81-136,
(1744-50 [1751]), 47-82.

Linnaeus would appreciate it if Colden could specify the place of growth and flowering season.

Linnaeus, knowing well the friendly disposition of fellow botanists, hopes Colden will be so kind as to send some dried plants and various seeds. Linnaeus will soon send back his observations of them. Linnaeus mentions the plants he is especially interested in and mentions many items in Colden’s catalogue.

Finally, if only Kalm could present all these plants with explanations, so once Linnaeus could see how much he had to rejoice at.


a. original holograph (New York Historical Society, Cadwallader Colden Papers, 1677-1832, Box 1: Scientific letters, papers and notes (1714-1763) , folder 1). [1] [2]