56 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 

 Potassium Cyanide — (cont.). 



Year. Plot 20a. Rate 16 cwt. per acre. 



Before. After. 



1 91 5 XXX Caustic soda XXXX 



1916 XXXX > X 



1 91 7 X Sod. cyanide O 



Year. Plot 20b. Rate 16 cwt. per acre. 



Before. After. 



1 91 5 XXX Caustic soda XXXX 



1916 XXXX > O 



1 91 7 O Nothing O 



Year. 



Plot 20c. Rate 16 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 

 XXX Caustic soda XXXX 



XXXX > 0 



O Nothing O 



Sodiuni Cyanide. 



Year. 



Plot 19. Rate 24 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 

 XXXX Lysol XXX 

 XXX Lysol XXX 



xxx > 0 



Year. 



Plot 54. Rate 24 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 

 — Nothing XX 

 XX Iodine XX 

 XX > O 



Year. 



Plot 20a. Rate 24 cwt. per acre. 



1915 

 I916 

 I917 



Before. After. 

 XXX Caustic soda XXXX 

 XXXX Pot. cyanide X 



X — > 0 



Year. 



Plot 65. Rate 24 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 



— Nothing ■ X 

 X > O 



Year. 



Plot 55. Rate 24 cwt. per acre. 





Year. 



Plot 67. Rate 24 cwt. per acre. 



1915 

 191O 

 I917 



Before. After. 



— Nothing XX 

 XX Paraffin emul. XXX 

 XXX > O 



1915 

 1916 

 1917 



Before. After. 



— Nothing — 



— Nothing XX 



"XX > 0 



Year. 



1915 

 1916 

 1917 



Plot 72. Rate 24 cwt. per acre. 



Before. 



— Nothing 



— Nothing 

 X > 



After. 



X 



o 



Year. 



Plot 66. Rate 24 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 

 — Nothing X 



X > 0 



