268 PRACTICAL FORESTRY 
41. Sweer-Gum (Liquidambar; Red Gum; Star- 
leaved Gum; bilsted) (Liquidambar  styraciflua 
Linn.). Height, 100 feet +-; diameter, 3 feet =- 
Southeastern States. Greatest development in basin 
of Mississippi River. Succeeds on a great variety 
of soils; a tree of the swamp as well as of dry soils; 
best on light, dry, sandy, and soils retentive of mois- 
ture. Rapid grower. Insect-proof, and generally 
healthy. 
42. Locusr (Locust; Yellow Locust) (Robima 
pseudacacia Linn.). Height, 80 feet +; diameter, 
14 feet +. Southern Allegheny region. Allegheny 
Mountains; local; but by cultivation widely dis- 
tributed east of Rocky Mountains. Poor, loose sands 
give best quality of timber; not succeeding well in 
compact soils, but will thrive on a thin one, and grows 
quickest on rich, sandy loam. Very rapid grower 
while young; needs light very much; sprouts per- 
sistently and vigorously from the roots. To be only 
sparingly dispersed among shady companions, which 
will afford protection against the borers. Easily 
propagated from seed. For short rotations and cop- 
pice management. 
43. Turre-TrEE (Whitewood; Yellow Poplar) 
(Liriodendron tulipifera Linn.). Height, 120 
feet +; diameter, 4 feet +. Eastern States. Great- 
est development in valiey of lower Wabash River, 
