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THE CONNECTICUT POMOLOGICAL SOCIETY. 



our fruit trees, and also upon the trees of the woodland. It 

 is a very easy matter to kill these by crushing them, as they 

 are usually found upon young trees, but an application of 

 poison to the foliage will prevent injury. 



Fig. 10. — Saddle-Back Caterpillar. 



Some will recognize this as the saddle-back caterpillar, 

 Empretia stimulca, which we sometimes see upon fruit trees. 

 Like the hag moth caterpillar, it has no legs. It seldom is 

 sufficiently abundant to do serious damage, but if it becomes 

 necessary to treat it, Paris green is the remedy. 



A plant-louse, the Wooly Aphis, Schiconciira lanizera, is 

 a common pest in our nurseries and apple orchards. There 

 are two forms of this insect ; one living upon twigs and branches, 

 where it forms curious enlargements, and the other upon the 

 roots. While this is a very serious pest, yet the form which 

 attacks the upper part of the tree is very easy to control. It 

 can be controlled by thorough spraying with kerosene emulsion 

 or kerosene and water (15 per cent, kerosene), and even by 

 common soap and water ( i lb. to 8 gals. ) . Upon the roots, 

 however, it is more difficult to kill because you cannot get at 

 it, and some orchardists now place ground tobacco about the 

 roots in setting young trees. This is good practice. 



