Complex sentence: Danielson was a leading Etruscologist and resided at various times in Italy to examine and copy the Etruscan inscriptions stock to C. Pauli's work "Corpus Inscriptionum etruscarum", which began to appear in 1893.
Split into simpler sentences: Danielson was a leading Etruscologist and resided at various times in Italy to examine and copy Etruscan inscriptions. Together with C. Pauli's he launched the "Corpus Inscriptionum etruscarum", which began to appear in 1893.