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 in many of the more important Catacombs which have been explored. These inscriptions were engraved on marble tablets by his friend and skilful artist Furius Dionysius Filocalus in clear beautiful characters. These fragments have been in many cases put together, and where the broken pieces were wanting have been wonderfully restored with the aid of "syllogæ" or collections of early Christian inscriptions gathered mostly in the ninth century by the industry of the monks. These "syllogæ" or collections have preserved for us some forty of the inscriptions of Pope Damasus in honour of martyrs and confessors buried in the Catacombs. With perhaps one solitary exception, they are all written in hexameter verse.

Such collections of early Christian inscriptions have been preserved in the libraries of such monasteries as Einsiedeln, S. Riquier, S. Gall, etc.

The result of the forty years of De Rossi's researches and work in the Catacombs, based on the above-mentioned historical documents and on the evidence derived from what he found in the ruined corridors of tombs and the chambers leading out of them, has been that, whereas before his time at most three important historical crypts were known, now already more than fifteen of these have been clearly identified, a wonderful and striking proof of the reality of the sufferings and constancy of the heroes and heroines of the faith in the first two hundred and fifty years of the existence of the religion of Jesus—sufferings and constancy which resulted in the final triumph of Christianity.

Briefly to enumerate just a very few of the more prominent later historical discoveries which have lifted much of the early history and inner life of the great Church of the Roman congregations from the domain of tradition into the realm of scientific history—

In the first century—the discoveries in the cemeteries of Domitilla and Priscilla. The long-disputed story of Nereus and Achilles; the existence and fate of the two Domitillas, kinswomen of the imperial house; the Christianity and