New York C. R» Crosby and assistants reported this insect as occurring 
quite generally over Wayne County.' 
Maryland E» N. Cory (March 16). "This insect seems to be on the upward 
swing of a cycle of increase, from observations made at Preston, 
Easton, Denton, Berlin, Snow Hill, and Princess Atone." 
(March 24) « "This increase seems to be due to the great re- 
duction of natural enemies following the almost total absence 
of this scale for a period of years." 
Ohio H» A. Gossard (April 27). "During late March and April the 
San Jose scale was received from many points throughout the 
State." 
Indiana J. J. Davis (April 15). "As in neighboring States, the San 
Jose scale has increased in Indiana and is now doing a great 
amount of injury. Counts in Indiana show a low comparative 
mortality similar to that reported by Chandler in Illinois 
in the last number of this Bulletin." 
Illinois S. C. Chandler (April 13). "Very little burning of leaves in 
plats sprayed with dormant sprays when leaves were one-half 
inch long. Oils were little or no worse than sulphur." 
Wisconsin S« B. Fracker (March 17). "Campaigns carried on at Sheboygan 
and Beloit in 1918-20 were, apparently, successful. An extensive 
control campaign is being put on this spring at Whitewater and 
an eradication project of this pest is under way at LaCrosse. 
This scale is not thriving but will survive most winters." 
Missouri L. Haseman (March 25). "The San Jose scale during the past 
summer and fall spread more rapidly than usual and most of 
the commercial -bearing orchards have trees badly encrusted* 
A State -wide campaign has been started in Missouri this winter, 
looking to the development of a more general application of 
dormant spraying." 
(April 19). "Most encouraging reductions have been secured 
by the campaign started earlier in the spring. Last year 
was a favorable one for scale increase." 
OYSTER-SHELL SCALE ( Lersidosanhea ulmi L. ) 
New York C* R. Crosby and assistants reported considerable infestation 
throughout the apple-growing sections of the State." 
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