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410 The Book of Woodcraft ROCK^ CLIFF HlCKORYoH CORK ELM ULMUS THOMAS! ^>N^ w IS fy I o ) I 1 b I H > o_rt -•-— vA^^^^ ^ vo' Rock, Cliff, Hickory or Cork Elm. {Ulmus Thomasi) A tall forest tree on dry or rocky uplands; occasionally loo feet high. Wood pale, reddish-brown; hard, close, strong, tough and heavy. A cubic foot weighs 45 lbs. It lasts a long time next the ground. It is regularly marked with corky ridges on the two-year-old branches, which give it a shaggy appearance. Its leaves are 2 to 5 inches long. "It possesses all the good qualities of the family, and none of the bad ones." {Keeler.)
