xxii List of Plates 



FACING 

 PAGE 



PLATE XIV. The woolly aphis 234 



PLATE XV. The tent caterpillar. Rosy apple aphis . . 246 

 PLATE XVI. Diseases of the apple 260 



PLATE XVIL This tree has produced as high as 20 bar- 

 rels of fine fruit in one season and averages about 10 

 barrels a year 274 



PLATE XVLLI. Showing method of picking practiced in 



Virginia 292 



PLATE XIX. Packing the fruit 306 



PLATE XX. Sizing and grading machines 326 



PLATE XXI A Baldwin tree near Paonia, Colorado . . 346 



PLATE XXII. A typical yellow Newtown orchard in the 



Watsonville, California, district 368 



PLATE XXIII. Seven-year-old Spitzenburg orchard in the 

 Northwest 390 



PLATE XXIV. A Nebraska orchard of Missouri Pippin 

 trees 418 



