By a process of grinding with carborundum and diamond dust, then rubbed with leather buffer. It approaches the diamond in hardness and an ordinary emery wheel will scarcely mark it. What is the weight of the petrified wood? About 200 pounds to the cubic foot. It varies. Why can’t visitors take specimens away with them? First: Because it is against the United States Law. After that comes consideration of future visitors to the Petrified Forest National Monument. When one reflects that there are about eighty thousand visitors here annually and that if each visitor took what pleased him, it is an unrefutable fact the best specimens would speedily disappear. A visitor would not be satisfied with one small piece. There would be the home folks to consider; the neighbor that fed the left-at-home cat, and the friend who loaned his kodak for the trip. These would all need souvenirs. It would be difficult to choose among several beautiful pieces and so a compromise would be made by taking all of them. [Illustration: Courtesy National Park Service They leave their sleeping places in the sides of the marl hills and roll to levels below.] What is a National Monument? An area set aside by the President of the United States to preserve regions of scientific, historic or prehistoric interest. What is the area of the Petrified Forest National Monument? 25,908 acres. Who has charge of it? The National Park Service, one of the largest and the most important bureaus of the Department of the Interior. A custodian and several Park Rangers are the immediate representatives of the Government on the Reservation. [Illustration: Courtesy National Park Service As the soil slowly settles beneath these giants their weight dismembers them. In this way they were broken in the lengths we find them now.] The Rainbow and Third Forests The Rainbow Forest lies eighteen miles east of Holbrook on U. S. Highway 70, the Holbrook-Springerville Road, open and in splendid condition the year around. This Rainbow Forest area contains a greater amount of highly colored petrified wood, than any of the other “forests” included in the Reservation.