THE APPLE. 69 



and various other forest trees. In habit and 

 form it closely resembles the common caterpil- 

 lar, being, however, more active and migratory, 

 marching rapidly in single column in search of 

 food. Their egg nests may be easily dis- 

 tinguished by being cut squarely off at 

 each end, as in Fig. 3. These egg clusters 

 are to be sought and destroyed before the 

 starting of buds. The young worms are 

 not as easily detected as the common tent 

 worm, but are to be sought early in the 

 morning and in their early stages, before 

 their migrations commence. They may 

 •^'s- '• then be easily destroyed. 



The Round-Headed Borer ( Saperda Candida). 

 This is a widespread enemy, preferring the ap- 

 ple, but common to the quince, mountain ash, 

 and many other trees. The brown-colored beetle, 

 with two broad, creamy white stripes running 

 the length of his body, is about three fourths of 

 an inch long ; flying at night, and depositing its 

 eggs singly in June and July under the loose 

 scales of bark, near the surface of the ground. 

 The worm soon hatches and penetrates to the 

 sap-wood, excavating flat cavities of the size of 

 a silver dollar in the inner bark, which are filled 

 with sawdust-like castings. It is now supposed 

 that the grub remains in these cavities for two 



