46 MAINE AGRICULTURAL EXPERIMENT STATION. I9O3. 



Deep plowing-, however, is necessar)', followed by dragging and 

 rolling in order to completely cover all vegetation and close up 

 all holes or passages through which the bugs might make their 

 way to the surface. 



If used promptly and thoroughly, the two latter methods are 

 also applicable when the bugs are found to be working during 

 early summer, and are all the more effective then because the 

 bugs do not scatter over the whole field but stay together in 

 comparatively small areas or strips, and if they are promptly 

 killed over such patches further injury for the season will be 

 very much lessened. 



OBSERVATIONS. 



The winter of 1901-1902 was unusual in some of its features. 

 Snow fell on the 14th of November and again on the 26th and 

 also on December 4th, the total amount aggregating over two 

 and a half feet. The maximum temperature did not rise much 

 above freezing during this time and the snow lasted. On 

 December loth began two weeks of rainy weather during which 

 over four inches of rain fell and the fields were washed bare of 

 snow. During the last week of December the maximum day 

 temperature varied from 29° to 50° and the minimum night tem- 

 perature from 2° to 33°, and during this time eight inches of 

 snow fell, followed a day later by one and a quarter inches of 

 rain. The minimum tem.perature of 2° occurred the night before 

 the rain, while the snow still remained on the ground. From 

 December i6th to 23rd, while the ground was bare, the maxi- 

 mum day temperature had varied from 13° to 21° and the mini- 

 mum night temperature from 5° below zero to 12° above. 



During the first week of January two inches of snow fell, the 

 mmimum night temperature only once rose above 6° and the 

 maximum day temperature only once above 22°, and high winds 

 prevailed. Several snow falls occurred before January 20th, 

 aggregating nearly a foot and a half. During the following 

 week over two inches of rain fell, the temperature was higher 

 and the ground again became bare. During February enough 

 snow fell to keep the fields slightly covered, although it was badly 

 drifted by the high winds which followed each snow fall. 



About the ist of Novem.ber chinch bugs were found in con- 

 •idcrable numbers in a pasture which was separated from a tim- 



