VII 

 Page. 



CHAPTER VII. METHODS OF GROWTH, TOPPING AND 



PRUNING 60 



1. The Growth 60 



2. Pinching out 61 



3. Pruning 63 



CHAPTER VIII. DISEASES AND PESTS 65 



1. Fungus 65 



2. Other Pests . 67 



C. TAPPING. 



CHAPTER IX. GENERAL CONSIDERATIONS 69 



1. Principal rules 69 



2. Tapping systems 74 



1. Full spiral cut 76 



2. Half spiral 77 



3. Single V-cut 79 



4. Full herringbone 79 



5. Half herringbone 80 



3. The calculation of distances between the 

 tapping lines 80 



4. Suitability of the tree for tapping .... 83 



CHAPTER X. THE PRACTICAL WORK OF TAPPING . . 87 



1. Setting out the tapping lines 87 



2. Points which must be observed 95 



3. Tapping with a pricker 99 



CHAPTER XI. TAPPING TOOLS 100 



1. The requisites of a tapping tool 100 



2. Tapping tools with a round edge .... 101 



3. Tapping tools with a square or straight edge 107 



