EUCALYPTUS TREES. 245 
Ulmus Americana, L.—The White Elm of North 
America ; a tree fond of moist river-banks ; one hun- 
dred feet high; trunk sixty feet; five feet in diame- 
ter. 
Ulmus campestris, L.—The ordinary Elm, indig- 
enous to South Europe and temperate Asia, as far 
Kastas Japan. Several marked varieties, such as the 
Cork Elm and Wych Elm, exist. The Elm in attain- 
ing an age of several centuries becomes finally of enor- 
mous size. The wood is tough, hard, fine-grained, 
and remarkably durable, if constantly under water ; 
next to the Yew, it is the best of European woods, 
where great elasticity is required, as for archery bows. 
It is also used for keels, blocks, and wheels. Bast 
tough. 
Ulmus Floridana, Chapman. — The West Florida 
Elm ; forty feet high. 
Ulmus fulva, Michx.—The Slippery or Red Elm of 
North America, sixty feet high ; wood red, tenacious. 
Ulmus racemosa, Thomas.—The Cork Elm of North 
America. 
For fuller information on trees, long known, refer 
to Loudon’s classic ‘¢ Arboretum ;’’ also, for many 
further details, to Lindley’s Treasury of Botany, to 
Asa Gray’s Manual, to Nuttall’s North American 
Sylva, to Lawson’s Pinetum, and many local works ; 
also to the volumes of the Exhibitions of 1862 and 
1867. 
