xviii
10 Secchi’s Meteorographs Outside of Italy . . . . . . . . . . . . . . . . . . . . . . . 175
Paolo Brenni
11 Secchi’s Book on “The Unity of Physical Forces” . . . . . . . . . . . . . . . . 195
Roberto Capuzzo-Dolcetta
12 The Measurement of the Geodetic Baselines Along the Via Appia
Antica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Tullio Aebischer
13 The History and Future of the Secchi Disk. . . . . . . . . . . . . . . . . . . . . . 215
Oliver Zielinski
14 Angelo Secchi and the Development of Geophysics in Italy . . . . . . . . 225
Alessio Argentieri and Maurizio Parotto
15 Angelo Secchi and the Measurement of Time . . . . . . . . . . . . . . . . . . . 243
Maria Luisa Tuscano
16 Secchi’s Science in the Service of the Public . . . . . . . . . . . . . . . . . . . . . 261
Monica Calzolari and Stefano Marsella
Part III Some Late Issues
17 The Unfulfilled “Secchi Monument” at Reggio Emilia . . . . . . . . . . . . 279
Fabrizio Bònoli and Agnese Mandrino
18 The Ups and Downs (and Ups Again!) of Astrophysics in Italy
After Secchi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Simone Bianchi
19 Astronomy in Rome After Secchi and His Legacy
at the Astronomical Observatory of Rome . . . . . . . . . . . . . . . . . . . . . . 323
Lucio Angelo Antonelli
Part IV Current Resources
20 Secchi’s Diffuse Correspondence in Italian Archives . . . . . . . . . . . . . 343
Antonella Gasperini and Mauro Gargano
21 GATE (Gregorian Archives Texts Editing): An Online Resource
of Angelo Secchi Correspondence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Lorenzo Mancini and Martín M. Morales
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
Contents