EUCOMMIA ULMOIDES. 
TU CHUNG. 
A 6-year-old specimen, 6 feet high, of the Tu Chung, or "hardy rubber tree," from western 
China. This tree, which grows in China to a height of 50 feet, while not especially striking, is of 
unusual interest as a park and garden tree, because its leaves and the bark, which is used by the 
Chinese as a drug, are filled with a remarkable substance closely allied to rubber. This substance 
is shown as silky, elastic fibers on breaking the bark, leaves, and fruit, and is being investigated in 
order to ascertain its possible value. The tree has proved hardy as far north as Boston, and it is 
desirable to know whether it will stand the winters throughout the country. 
