126 BUTTERFLIES AND MOTHS. 



In the case of the White Cabbage Butterflies, of 

 •which the caterpillars often do serious mischief in 

 gardens, they have been found not to do so much harm, 

 in proportion to field Cabbage, because the caterpillars 

 choose a dry, well- sheltered place to change in. For 

 this they crawl away from their food-plants, and hang 

 themselves by a silken band under eaves, palings, or 

 the like shelter, out of doors, or in any neglected cor- 

 ners in garden-sheds, where they are allowed accom- 



FiG. 99. — Small White Cabbage Butterfly : catei'iDillar, and chrysalis. 



modation, and much may be done to lessen amount of 

 attack simply by tidiness. The collections of old 

 brooms, bits of wood, and dry rubbish of every kind in 

 which they shelter are much better away, whether in- 

 doors or out ; and a brush, taken along angles and in 

 corners, and under stairs, ladders, beams, &c., in 

 garden-sheds, will sometimes clear the chrysalids out 

 by the handful. A search of this kind between the 

 time of the first and second brood in summer, and 

 some time between November and March, would do 

 much good. 



It is an excellent principle to keep down the effect 

 of insect-attack by broad measures of agricultural 

 treatment which will carry the plant well on away 

 from the power of the insect ; but at the same time it 

 should not be forgotten that when there are a great 



