was taking the omens". Cicero also mentions a statue of the she-wolf as one of a number of sacred objects on the Capitoline that had been inauspiciously struck by lightning in 65 BC: "it was a gilt statue on the Capitol of a baby being given suck from the udders of a wolf." Cicero also mentions the wolf in De Divinatione 1.20 and 2.47. The Capitoline Wolf was widely assumed to be the very sculpture described by Cicero, due to the presence of damage to the sculpture's paw, which was believed to correspond to the lightning strike of 65 BC. The 18th-century German art historian Johann Joachim Winckelmann attributed the statue to an Etruscan maker in the fifth century BC, based on how the wolf's fur was depicted. It was first attributed to the Veiian artist Vulca, who decorated the Temple of Jupiter Capitolinus, and then reattributed to an unknown Etruscan artist of around 480–470 BC. Winckelmann correctly identified a Renaissance origin for the twins; they were probably added in 1471 AD or later. During the 19th century, a number of researchers questioned Winckelmann's dating of the bronze. August Emil Braun, the secretary of the Archaeological Institute of Rome, proposed in 1854 that the damage to the wolf's paw had been caused by an error during casting. Wilhelm Fröhner, the conservator of the Louvre, stated in 1878 that the style of the statue was attributable to the Carolingian art period rather than the Etruscan, and in 1885, Wilhelm von Bode also stated that he was of the view that the statue was most likely a mediaeval work. These views were largely disregarded, though, and had been forgotten by the 20th century. In 2006, Italian art historian Anna Maria Carruba and archaeologist Adriano La Regina contested the traditional dating of the wolf on the basis of an analysis of the casting technique. Carruba had been given the task of restoring the sculpture in 1997, enabling her to examine how it had been made. She observed that the statue had been cast in a single piece, using a variation of the lost-wax casting technique. This technique was not used in Classical antiquity; ancient Greek and Roman bronzes were typically constructed from multiple pieces, a method that facilitated high-quality castings, with less risk than would be involved in casting the entire sculpture at once. Single-piece casting was, however, widely used in the Middle