In 1854 - 1855 , he supervised an exact survey of the Appian Way in Rome .
Secchi also performed related technical works for the Papal government , such as overseeing placement of sundials and repair or installation of municipal water systems .
In 1854 - 1855 , Secchi supervised an exact survey of the Appian Way in Rome .
Secchi also performed related technical works for the Papal government , such as overseeing placement of sundials and repair or installation of municipal water systems .