The Philadelphia Museum of Art presents this online mini-tutorial on the conservation of fine arts objects, complete with definitions, and plenty of examples. The site starts with differentiating preventative conservation measures - everything that can be done to slow the deterioration of a work. The Projects section contains examples of these conservation techniques. Within this section, the "Costume and Textile Department Move" describes the eight-year-long process of moving the Museum's extensive costume collection to a better storage facility. The section entitled "Rodin's The Thinker" describes the conservation treatments used to restore the finish of this famous statue, corroded and damaged by acid rain, after being exhibited outdoors for sixty years. One of the final steps was applying a protective wax coating, which has been renewed twice since the restored Thinker was re-installed in 1992.