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Universal Exhibition, Paris, 1867
Secchi presented his meteorograph, which achieved a great public success and was
awarded with the Grand Prix (Brenni, Chap. 10, in this volume; Chinnici 2019:
125–133; 201–204)
Total Solar Eclipse, 22 December 1870, Augusta (Sicily)
Secchi’s participation in this scientific expedition, the first organized by the new
Italian government, provoked diplomatic problems, cleverly solved by
Pietro  Tacchini. Secchi again used photography but the results were poor due to
unfavorable weather conditions (Chinnici 2019: 147).
International Conference of the Meter (Paris, 1870–72)
Secchi participated as a delegate of Papal States, and this caused a diplomatic incident with the Italian delegation. The protests of the latter were not accepted by the
Commission, and this was an important personal success for Secchi and a proof of
the high esteem he enjoyed in the international community (Chinnici 2019:
149–159).
Congress of the Italian Scientists (Palermo, 1875)
On that occasion, a reform project for the Italian Observatories was discussed;
Secchi succeeded in avoiding the confiscation of the Collegio Romano Observatory,
which instead obtained a special status in recognition of the value of the illustrious
Jesuit scientist (Chinnici 2019: 312–313).
Angelo Secchi: Biographic Notes (Chinnici 2019)
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