EFFECTS OF WEATHER ON INSECTS. 
The following Lecture on the effects of weather (such 
as rain, frost, heat, or drought) on insect-life, and 
methods by which these influences may be brought to 
hear practically in the course of common agricultural 
treatment on diminishing the amount of insects in¬ 
jurious to our crops, was delivered to the students of 
the Royal Agricultural College, Cirencester, by Miss 
E. A. Ormerod, on Thursday, October 12th. 
A few years ago the subject of how far knowledge of 
weather influence could be reliably and serviceably used 
in connection with the management of Forest and Food 
Crops was brought forward by the Meteorological Con¬ 
gress at Vienna under the name of “Agricultural and 
Forest Meteorology,” and in the United States of America 
the subject has received for some time (and is now 
receiving), practical attention in its bearings both as to 
direct and indirect effect on insect-life. 
Our own Meteorological Society has also given some 
amount of attention to the same subject, and, by search 
through our Agricultural Reports, and especially those 
given yearly in terse tabulated form, which may be con¬ 
veniently studied with coincident weather reports, we 
may see clearly that great appearances of our crop 
pests often occur, either accompanying, or after, or after 
some unusual duration of, some particular state of 
weather. But as yet, although some points are clearly 
