Fig. 40. Netting Material Lying in loose 

 Folds over Plants, without support. Note 

 that with all kinds of Nets the edges must be 

 carefully covered with fine soil. Common 

 Mosquito netting is too coarse to keep out 

 Thrips, Plant Lice, and the various small 

 Beetles. 



Fig. 43. Tarred Board, operated by one person. This is 

 effective if properly and careful!}' done. After using this ten 

 minutes, there were over two .hundred insects^on one square 

 foot of the board. 



