 He also established the system of tomb numbering that has been in use, with additions, ever since.The second half of the century saw a more concerted effort to preserve, rather than simply gather, antiquities.Auguste Mariette's Egyptian Antiquities Service started to explore the valley, first with Eugène Lefébure in 1883, then Jules Baillet and Georges Bénédite in early 1888, and finally Victor Loret in 1898 to 1899.