LIST OF ILLUSTRATIONS. 



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1. Eootstock 13 



2, 3. Double-hooked Climbing Hair 15 



4. Single-hooked Climbing Hair 15 



5. Leaves and Stipules 16 



6. Male Flower of the Hop 18 



7. Female Flower of the Hop 19 



8. Spindle (Highly Magnified) 19 



9. Spicule of the Cone (Highly Magnified) .... 20 



10. Bracteole (Five Times Natural Size) 22 



11. Cones (Natural Size) 22 



12. Clubbed Glands 23 



13. Disc Gland 23 



14. Lupulin Granule 24 



15. Developed Fruit with Pericardium. — Lupulin Granule . 25 



16. Cutting 31 



17. Prolongation of Gone 44 



18. Field Parcelled out in Plots for Hand Trenching . . 90 



19. Planting on the Triangular System 100 



20. Planting in Squares 101 



21. Planting in Kectangles 102 



22. Set Frame for Acute Angles 104 



23. Planting in Equilateral Triangles 104 



24. Rectangular Straight Edge 105 



25. Pointed Mattock 108 



26. Broad Mattock 108 



27. Planted Set 110 



28. Planting Two or Three Sets in a Hole Ill 



29. Saaz Hop Mattock 120 



30. Lower Bavarian Broad Mattock 120 



31. Bayreuth Hop Mattock 120 



32. Krumbach Hop Mattock 121 



33. English Hop Mattock 121 



34. Swabian Hop Mattock 121 



35. Hessian 2-tine Hooked Fork 122 



36. English 3- tine Hooked Fork 122 



