Oct. 4 , 1915-Mar. 27, 1916 IlltiStTCittOflS XIX 
Fig. 14. Diagram showing the number of wheat plants up and dry matter pro¬ 
duced in 16 days on College loam with potassium nitrate, magnesium 
nitrate, and sodium nitrate in different combinations and concen¬ 
trations... 21 
15. Diagram showing the number of wheat plants up and dry matter pro¬ 
duced in 16 days on College loam with potassium sulphate, magne¬ 
sium sulphate, and sodium sulphate in different combinations and 
concentrations. 22 
16. Diagram showing the number of com plants up and dry matter pro¬ 
duced in 21 days on Greenville loam with sodium sulphate, sodium 
carbonate, and sodium chlorid in different combinations and con¬ 
centrations. 22 
17. Diagram showing the number of barley plants up and dry matter pro¬ 
duced in 24 days on Greenville loam with sodium sulphate, sodium 
carbonate, and sodium chlorid in different combinations and com 
centrations. 23 
18. Diagram showing the number of wheat plants up and dry matter pro¬ 
duced in 16 days on College loam with ammonium carbonate, sodium 
carbonate, and potassium carbonate in different combinations and 
concentrations.. 23 
19. Diagram showing the number of oat plants up and dry matter produced 
in 21 days on Greenville loam with sodium sulphate, sodium carbon¬ 
ate , and sodium chlorid in different combinations and concentrations. 24 
20. Diagram showing the number of sugar-beet plants up and dry matter 
produced in 21 days on Greenville loam with sodium sulphate, so¬ 
dium carbonate, and sodium chlorid in different combinations and 
concentrations. 24 
21. Diagram showing the number of alfalfa plants up and dry matter pro¬ 
duced in 21 days on College loam with sodium sulphate, sodium 
carbonate, and sodium chlorid in different combinations and con¬ 
centrations. 25 
22. Diagram showing the number of Canada field-pea plants up and dry 
matter produced in 21 days on Greenville loam with sodium chlorid, 
sodium sulphate, and sodium carbonate in different combinations 
and concentrations. 25 
23. Diagram showing the number of seedlings alive and dry matter pro- 
* duced in tops and roots in 21 days with solutions of sodium chlorid, 
sodium sulphate, and sodium carbonate in different combinations 
and concentrations... 26 
24. Diagram showing the number of wheat seedlings alive and dry matter 
produced in tops and roots in 21 days with solutions of potassium 
chlorid, calcium chlorid, and magnesium chlorid in different com¬ 
binations and concentrations. 27 
25. Diagram showing the number of wheat seedlings alive and dry matter 
produced in tops and roots in 21 days with solutions of sodium nitrate, 
potassium nitrate, and magnesium nitrate in different combinations 
and concentrations. 27 
26. Curve showing the number of wheat plants germinating in College 
loam, Greenville loam, and sand with different concentrations_ 29 
2 7. Curve showing the number of wheat plants germinating in College loam, 
Greenville loam, and sand containing various salts. 30 
28. Curve showing the effect of various combinations of salts in different 
concentrations on the number of wheat plants germinating. 30 
