64 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Evans's Soil Steriliser. 



Year. 



Plot 32. Rate 52 gal. per acre. 



Before. After. 



1915 XXX > XXX 



1 91 6 I XXX Clubicide Tr 



1 91 7 I Tr Saponified X 



creosote 



" Twiset." 



Year. 



Plot 3. Rate 165 gal. per acre. 



1915 

 1916 

 1917 



Before. After. 

 XX K,S0 4 X 

 X K t S0 4 XX 



XX ■ > XXX 



Year. 



Plot 4. 



Rate 165 gal. per acre. 





Before. 



After. 



1915 



XXXX 



Phenol O 



1916 



O 



Nothing Tr 



1 917 



Tr 



> Tr 



Year. Plot 5. Rate 165 gal. per acre. 



Before. After. 



1 91 5 XXXX Kainit O 



1 91 6 O Nothing XXX 



1 91 7 XXX > XXXX 



Year. Plot 6. Rate 165 gal. per acre. 



Before. After. 



1 91 5 XX Clubicide O 



1 916 O Nothing XX 



1 9 1 7 XX > XXXX 



Year. Plot 7. Rate 165 gal. per acre. 



Before. After. 



1 91 5 XXX NaCl O 



1 91 6 O Nothing X 



1917 X > XXX 



Year. Plot 9. Rate 165 gal. per acre. 



Before. After. 



1 91 5 X Copper sulphate O 



1 91 6 O Nothing Tr 



1917 Tr > X 



Year. 



Plot 48. Rate 165 gal. per acre. 



1915 

 1916 

 I917 



Before. After. 

 — Nothing X 

 X Creosote XXX 



XXX > XXX 



Year. 



Plot 50 



Rate 165 gal. per acre. 





Before. 



After. 



1915 





Nothing X 



1916 



X 



Turpentine XX 







emulsion 



1917 



XX 



> XX 



Diseased Subsoils Treated with Various Coal 

 Tar Bye- Pro ducts. 



Phenol. 



Year. 



Plot 4. Rate 42 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 



XXXX > 0 



O Nothing Tr 

 Tr Twiset Tr 



Year. 



Plot 31. Rate 15} cwt. per acre. 



1915 



1916 



1917 



Before. After. 



X > 0 



O Nothing O 

 0 Nothing X 



