im- 
ple 
No. 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
51 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
32 
33 
34 
Colorado Experiment Station. 
ion between size of tzvig and occurrence of B. amylovorus. 
Material collected April 12 , 14, 1911. 
(Table No. 1.) 
Diameter of 
twig in 
millimeters 
Presence of 
B. amylo¬ 
vorus 
Character of microbic flora foun 
blighted wood". 
12 
- 
Moulds 
13 
+ 
Pure culture B. amylovorus 
16 
— 
Sterile 
13 
— 
Mixed, cream and yellow colonies 
13 
+ 
Pure culture B. amylovorus 
10 
— 
Sterile. 
14 
— 
Fluorescent green colonies 
12 
— 
Fluorescent green colonies 
7 
— 
Sterile. 
9 
+ 
Mixed, B. amylovorus 
10 
—• 
Moulds. 
7 
4- 
Pure culture B. amylovorus 
12 
+ 
Pure culture B. amylovorus 
13 
-r 
Pure culture B. amylovorus 
17 
— 
Moulds. 
16 
— 
Moulds. 
12 
— 
Moulds. 
14 
■ 
Moulds; cream and yellow colonies 
B. amylovorus. 
15 
+ 
Pure culture B. amylovorus 
14 
— 
Moulds. 
16 
— 
Sterile. 
23 
—• 
Mixed; yellow, green and whi f e col 
30 
— 
Cream colonies 
21 
— 
Moulds 
23 
- 
Mixed; yellow and white colonies, 
moulds 
47 
— 
Pale cream colonies 
36 
— 
Yellow colonies and moulds 
30 
+ 
Pure culture B. amylovorus. 
28 
— 
Yellow colonies 
28 
— 
White stellate colonies 
38 
— 
Sterile 
20 
—■ 
Moulds 
26 
— 
Sterile 
23 
— 
Sterile 
in 
