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MISSOURI BOTANICAL GARDEN BULLETIN 61 
ment. The best time for root pruning is immediately before 
defoliation. Young plants may be held in check or controlled 
by this method, and it is advisable to do this to aid in the 
development of lateral branches. 
CONTROL OF INSECTS AND DISEASE. 
San Jose Scale-——Fumigate when plants are dormant, with 
hydrocyanie gas. 
Peach Borer—A whitish larva about three-quarters of an 
inch long when mature, which bores into the crown and upper 
roots, causing exudation of gum. It must be dug out, after 
which apply gas tar or coal tar around the basal portion of 
the trunk or lower branches. This latter remedy is, however, 
more for outside protection than inside. Also use hydrocyanic 
gas fumigation if possible. 
Green Fly—Troublesome upon the young foliage, espe- 
cially at the time when fruit is setting. The grower is some- 
what handicapped at this time by his inability to spray until 
after the setting of the fruit. Spray as soon as possible with 
nicotine, or fumigate. 
Red Spider—Fumigation or forcible spraying after setting 
of fruit. 
THE FIRST EXHIBITION OF THE AMERICAN 
ORCHID SOCIETY 
The first exhibition of the American Orchid Society, held 
in Horticultural Hall, Boston, Massachusetts, May 8-11, was 
an event which marked an epoch in the annals of American 
orchidology. The thousands of flowering orchids brought 
to the hall far exceeded the expectations of the members of 
the Society. With the exception of one small lot from England 
and the collection sent by the Missouri Botanical Garden all 
the exhibits were from the immediate vicinity of Boston, the 
home of the first cultivated orchid in America. 
The success of the show was due largely to the efforts of 
Mr. Albert C. Burrage, the president of the Society. His 
exhibits comprised nearly two-thirds of the total display, 
filling the large hall. Mr. Burrage paid particular attention 
to the native environment of the orchid and as far as pos- 
sible staged his plants according to their geographical dis- 
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