PERONIA ELEPHANTUM. WOOD-APPLE. 
Natural size photograph of the fruit of a large tree of 
the citrus group, which yields a hard, heavy, strong "but not 
durable wood. The gum from bark wounds forms one of the con- 
stituents of the so-called East Indian gum arable. The pulp 
of the fruit, like that of the Belou marmelos, is used by the 
natives of India to prepare a jelly resembling black currant 
jelly. As the tree occurs native only from the foothills of 
the Himalayas southward, it is probably not as hardy as the 
belou which ascends to 4,000 feet in the mountains of India. 
Introduced at Mr. Swingle's request for the purpose of hydrid- 
izing with the bael fruit and as a stock for it. Photograph 
from specimen received from Kirkee, India, September, 1909. 
