272 



Journal of Agricultural Research 



Yo\. XVI, No. 10 



Table VI. — Moisture content of the surface foot of plot 4 and the excess of moisture in 



that of plot ;^ 



B. — EXCESS OF MOISTURE ON PLOT 3 OVER THAT ON PLOT 4 



Table VII. — Moisture content of soil on plot 4 to a depth of j feet, at the first of each 

 month and the excess of moisture at corresponding depths on the other plots, arranged 

 to show any relatioti of these differences to differences in the nitrogen content of the 

 surface foot 



A — MOISTURE CONTENT 



Date and depth of section. 



Plot 4. 



Excess on other plots. 



Plotj . Plot 2. Plots- Plot 6 



MAY I. 



I to 6 inches 



7 to 12 inches 



Second foot 



Third foot 



JULY I. 



I to 6 inches 



7 to 12 inches 



Second foot 



Third foot 



AUGUST 4 



I to 6 inches 



7 to 12 inches 



Second foot 



Third foot 



SEPTEMBER 



I to 6 inches 



7 to 12 inches 



Second foot 



Third foot 



P.ct. 



24. 2 



25-5 

 23. 2 

 20. 5 



23-7 

 25-4 

 25-1 

 23-7 



28.4 

 28.8 

 28.0 

 26. 5 



19.8 

 20. o 



21.4 



P.ci. 



5- I 

 4.4 

 3-8 

 4-9 



3-7 



3-5 



1-3 



•9 



4-8 

 1.6 



•1-3 I 



2-3 

 . o 



I. o 

 I. o 



P.ct. 

 2.6 

 2.8 



3-3 



4-9 

 .6 



- -4 

 . 2 



4. o 



1. 1 



. I 



-I. I 



2.7 



— I. o 



- -7 

 —2. I 



P.ct. 



3-2 

 I. 2 

 I. 2 

 2.9 



1-7 

 ■ . I 



.6 



.8 

 — . I 



-1-3 

 -1.6 



1-7 

 .8 



I. o 



.8 



P.ct. 



3-3 



. I 



2.9 



- .7 



1.4 



•7 



1. 1 



1. 1 



1-7 



-4 

 ■1-3 



2-3 



- .8 



I. I 



•4 



B — NITROGEN CONTENT 



I to 6 inches. . , 

 7 to 9 inches. . 

 10 to 12 inches 



o. 180 

 . 161 

 . 129 



055 

 071 

 064 



0.056 

 .051 

 .032 



o. 028 



. 042 



• 033 



0.013 



. 009 

 - . 013 



' A single 6-lnch sample used instead of successive 3-inch samples. 



