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C18

Link: linnaeus.c18.net/Letter/L3517 • Giovanni Maria della Torre to Carl Linnaeus, 29 January 1765 n.s.
Dated die 29 Januarii 1765. Sent from Napoli (Italia) to Uppsala (Sweden). Written in Latin.

Excellentissime Domine,

Mitto specimen novae inventionis tubi optici per refractionem, qui mihi visus fuit in praxi expeditior, et a quo eadem, imo maiora forsan emolumenta recipere possumus, tum pro obiectis caelestibus, cum pro terrestribus, quam a novo invento Dollondi et aliorum duplicis obiectivi. Experientia plura me docuit circa hoc novum inventum, quorum praecipua hic expono. Rogo, ut sapientissimis Academicis proponas, ut examini rem subiiciant, et quae detexi, maiori conatu perficiant tam qui Praxi quam qui Theoriae operam dant, ut tandem stabiliantur leges, quibus tubi optici communes construendi sunt. Nomine meo Academicos ora, et saluta! Si quid possum, me adhibe et cura, ut valeas!

Dabam Neapoli die 29 Januarii 1765.

Addictissimus famulus
Jo[anni] Maria de Turre

A Monsieur
Monsieur Carolus Linnaeo Professeur de Botanique
etc.
a Upsal
Svezia

upSUMMARY

Giovanni Maria della TorreTorre, Giovanni Maria della
(1713-1782). Italian. Naturalist,
Naples. Head of the Royal Library and
Museum at Capo di Monte. Well known for
the excavations at Herculaneum and
Pompei. Correspondent of Linnaeus.
sends Linnaeus an example of a recently invented optical instrument, which he has found to be better both in astronomical observations and in the investigations of terrestrial objects. Della Torre compares it with one invented by John DollondDollond, John (1706-1761).
British. Made and sold optical
instruments, from 1751 trading as J.
Dollond & Son,
and with others with double lenses.

Della Torre has learnt much from his work with this instrument, and now he asks Linnaeus to suggest that his colleagues in the Royal Swedish Academy of Sciences [Kungliga Svenska VetenskapsakademienKungliga Svenska Vetenskapsakademien,
Swedish. The Royal Swedish
Academy of Sciences, Stockholm. Founded
in 1739.
] test it and assess it with regard to both practice and theory. Della Torre hopes that some general agreement will eventually be reached on the construction of optical instruments for wide use.

upMANUSCRIPTS

a. original holograph (LS, XV, 438-439). [1] [2] [3]