Earwigs causing Annoyance. 119 



Tkeatmext. 



It is most important that all gall-bearing trees in young spruce 

 plantations should be felled and the galled boughs biu'nt in the 

 summer. In fresh planted areas the trees should be gone over in the 

 summer and the galls carefully picked off and burnt. ■ 



They are always most abundant where the trees are too thickly 

 planted and on cold clay soils ; both thick growth and clay soil 

 should be avoided for spruce plantations. 



GROUP F. 



Animals which concern Man as being injurious to his worked- 

 up Products of Art and Industry, such as (A) his Buildings 

 and larger Constructions and Habitations, (B) Furniture, 

 Books, Drapery and Clothing, (C) Food and Stores. 



SUB-GEOUP A. 

 Earwigs causing Annoyance Indoors. 



Mr. F. W. Carter, of the Board of Agriculture, ^^Tites that his 

 house at Boxmoor is infested with Earwigs (31.vii.02), which come 

 into the house each night in large quantities ; they appeared to be 

 living in tlie crevices between the window-frames and the brickwork, 

 and also they seemed to be in the soil. 



What I am anxious to know, A\Tites Mr. Carter, is what they feed 

 upon, their habits, etc., and also what, if any, chemicals could safely be 

 employed to eradicate them from the window frames. I have tried 

 syringing with paraffin and water, but no use. I have also tried spreading 

 unslacked lime under the window sills to prevent them creeping into the 

 house, but of no use. Can you suggest any means of eradicating them, 

 etc. 



The following reply was sent : — 



" Judging from the description you give of the Earwig nuisance, I 

 should say the species is the large Earwig {Forficula auricular ia), which 



