PROTECTING PLANTS 



187 



0k 



"?a-.iiiiii"' 



230. Protecting from 

 cut-worms. 



and the upper edge of the cotton turned down like the top of 

 a boot ; the insects cannot crawl over this obstruction (p. 203). 



The maggots, that attack the roots of 

 cabbages and cauliflowers may be kept 

 from the plant by pieces of tarred paper, 

 which are placed close about the stem upon 

 the surface of the ground. Fig. 232 illus- 

 trates a hexagon of paper, and also shows 

 a tool used for cutting it. This means of 

 preventing the attacks of the cabbage 

 maggot is described in detail by the late 



Professor Goff (for 



another method of 



controlling cabbage maggot see p. 201) : — 

 " The cards are cut in a hexagonal 



form, in order better to economize the 



material, and a thinner grade of tarred 



paper than the 



ordinary roofing 



felt is used, as 



it is not only 



cheaper, but be- 

 ing more flexible, 



the cards made 



from it are more 



readily placed 



about the plant 

 without being torn. The blade of the 



tool, which should be made by an expert ^^^ showinlhX paper is 

 blacksmith, is formed from a band of cut for protecting cab 

 steel, bent in the form of a half hexagon, 

 and then taking an acute angle, reaches 

 nearly to the center, as shown in Fig. 232. The part making 

 the star-shaped cut is formed from a separate piece of steel, so 



231. Protecting trees from 

 cut-worms. 



><. 



cut 



bages from maggots. 



The Goff device. 



