While in Peru Augustus became interested in the causes of earthquakes . He was able to observe the 1868 Arica earthquake and he studied the resulting damage and interviewed people about what they experienced . During this time Le Plongeon began to speak out against abuses by Jesuit priests and the Catholic Church in Peru . He published two anti-Jesuit books , '' La religion de Jesus comparada con las ensenanzas de la Iglesia '' ( 1867 ) , and '' Los Jesuitas y el Peru '' ( 1869 )
1868 Arica earthquake
1868 Arica earthquake
Augustus Le Plongeon