LIST OF ILLUSTRATIONS 



no. 



1. Sketch illustrating water culture methods . 



2. Photograph. Barley grown with copper sulphate 



3. Curve. Ditto 



4. Photograph. Peas grown with copper sulphate 



5. Curve. Ditto 



6. Curve. Barley grown with zinc sulphate 

 v. Photograph. Peas grown with zinc sulphate 



8. Curve. Ditto 



9. Photograph. Barley grown with arsenious acid 



10. Curve. Ditto 



11. Curve. Peas grown with arsenious acid 



12. Curve. Barley grown with arsenic acid 



13. Curve. Barley grown with sodium arsenite . 



14. Curve. Peas grown with sodium arsenite . 



15. Curve. Barley grown with boric acid . 



16. Photograph. Peas grown with boric acid . 



17. Curve. Barley grown with manganese sulphate 



18. Photograph. Ditto 



19. Photograph. Peas grown with, manganese sulphate 



PAQE 



12 

 To face 20 



21 

 To face 29 



29 



40 

 To face 40 



41 

 To face 54 



55 



55 

 56 

 56 

 57 

 69 



To face 69 

 85 



To face 86 

 86 



