June i6, 1923 A zotobacter Flora and Nitrogen Fixing A bility of Soils 921 
Tabi<B IX .—Type of growth, nitrogen fixed, and reaction of soils of Series III 
Soil 
No. 
County. 
Type of film. 
Microscopic picture 
Nitro¬ 
gen 
fixed. 
Azoto¬ 
bacter. 
Ph 
colori¬ 
metric. 
Ph 
electro¬ 
metric. 
Mgm. 
161. . 
Pottawata- 
Typical Azoto- 
Typical Azoto- 
8.6 
+ 
6-5 
^. 2 -L 
tamie. 
bacter. 
bacter. 
162. . 
.do. 
Nontypical film. 
Azotobacter (?)... 
7-1 
+ 
5*7 
6,02 
. . 
Cloud. 
.do.. 
.do. 
5-8 
-b 
6.0 
i6ii. . 
. - do .... 
None. 
No Azotobacter... 
<.o 
3.7 
j • 
i6<. . 
.do. 
.do. 
.do. 
4.4 
D * i 
';.6 
cj. CA 
166. . 
.do. 
.do. 
.do. 
7.0 
0 0*T 
C. 71 
167. , 
Wyandotte. 
Nontypical. 
Typical Azoto- 
8.0 
+ 
6.1 
6.25 
bacter. 
168.. 
Franklin.... 
None. 
No Azotobacter... 
6.3 
— 
5-4 
5-17 
160. . 
.do. 
Nontypical. 
Azotobacter pres- 
7.1 
-f 
5-2 
t;. 10 
ent. 
170.. 
Wilson. 
.do. 
.do. 
2.9 
+ 
5*9 
5-93 
171. . 
.do. 
.do. 
.do. 
2.0 
+ 
5.4 
172 . • 
.do . 
None. 
No Azotobacter... 
0 0^ 
<.02 
173- • 
Pawnee.... 
Typical Azoto- 
Typical Azoto- 
8.2 
+ 
D 0 
6.0 
6.0a 
bacter.® 
bacter.® 
174.. 
Franklin.... 
None.. 
Azotobacter (?)... 
5-4 
— 
S-8 
5-85 
171; . . 
.do. 
.do. 
3.0 
— 
*?*4 
<.2Q 
176. . 
Anderson... 
Typical Azoto- 
Typical Azoto- 
9.1 
+ 
0 ^ 
6.S 
0 7 
6-35 
bacter. 
bacter. 
177 . . 
.... do. 
None. 
Azotobacter (?). . 
7.2 
5.6 
*?. 37 
178.. 
.do. 
.do. 
No Azotobacter... 
# 
9.6 
— 
0 
5.6 
5 - 3 ^ 
179. . 
Nemaha. 
.do. 
.do. 
4.7 
— 
5.8 
5 - 7 ^ 
180.. 
.do. 
.do. 
.do. 
1.8 
— 
5*6 
5-47 
181. . 
Marshall.... 
Nontypical. 
Azotobacter (?)... 
7-9 
5-9 
6.10 
182. . 
.do. 
None. 
No Azotobacter... 
7.8 
_ 
6.2 
6. «;2 
183. . 
.do. 
Typical Azoto- 
Typical Azoto¬ 
8.8 
+ 
6.9 
7-37 
bacter. 
bacter. 
184 
.do. 
8.5 
+ 
6.4 
6.77 
185. . 
Wyandotte. 
None. 
No Azotobacter. . 
4.6 
5.6 
5*44 
186. . 
.do. 
Typical Azoto- 
Typical Azoto¬ 
9.9 
+ 
7.2 
7.72 
bacter. 
bacter. 
187. . 
.do. 
.do. 
8.S 
“b 
6.2 
6.69 
188.. 
Atchinson... 
Nontypical. 
Azotobacter pres¬ 
7-4 
+ 
5.6 
y 
5-52 
ent. 
189. . 
.do. 
None. 
No Azotobacter. . 
0.8 
— 
5*6 
5-52 
190 
. do . 
.do. 
Azotobacter pres¬ 
5*5 
_ 
5-6 
5-34 
ent.® 
I9I. . 
.do. 
.do. 
No Azotobacter. . 
5-3 
— 
5-7 
5-32 
102 . 
Wilson. ... 
.do. 
.do. 
7.2 
.— 
3.6 
K.22 
193 -• 
Jewell. 
Nontypical. 
Typical Azoto- 
9.5 
+ 
6.6 
6.84 
bacter. 
194.. 
.do. 
Typical Azoto- 
.do. 
8.1 
+ 
6.0 
6.15 
bacter. 
IOC 
Chase . . . 
None. 
No Azotobacter. . 
7-7 
_ 
5-8 
3-60 
• • 
196 
.do. 
i t 
6.6 
_ 
5-4 
4.90 
107 . . 
.do. 
Typical Azoto- 
Typical Azoto¬ 
6.9 
+ 
6.6 
757 
bacter. 
bacter. 
198.. 
I^yon. 
None. 
Azotobacter (?)... 
4.6 
— 
5.9 
5-49 
100 
.. do. 
Nontypical. 
Typical Azoto¬ 
5.1 
+ 
5*9 
6.07 
*yy • • 
bacter. 
200.. 
Osborne.... 
Typical Azoto- 
.do. 
7-9 
+ 
7.6 
8.28 
bacter. 
201 
. .do. 
None. 
No Azotobacter. . 
6.1 
— 
6.1 
5*98 
202.. 
Kearney..,. 
Typical Azoto- 
Typical Azoto¬ 
7-5 
+ 
7-4 
8.19 
bacter. 
bacter. 
203.. 
.do. 
7.0 
+ 
7.0 
7-25 
“ One sample. 
