xo4 
Journal of Agricultural Research 
VoL VIII, No. 3 
Table II .—Measurements (in microns) of each organism arranged according to method 
of staining 
AQUEOUS GENTIAN VIOLET 
Organism. 
Width. 
Length. 
Average size. 
B, atrosepticus . 
o. 5 to o. 7 
•4 to .7 
• 4 to .7 
.5 to .7 
• S to .8 
• 4 to .7 
• 3 to .6 
1. 6 to 2. 5 
i to 1. 9 
1. 3 to 2 
1. 6 to 2. 8 
1. 6 to 2. 5 
1. 5 to 2. 6 
. 6 to 1. 4 
0.6 by 2 
• s by 1.3 
• 5 by 1. 6 
. 6 by 2. i 
. 6 by 2 
. 6 by 1. 9 
• S by .9 
B . solanisaprus . 
B. melano genes . 
IIIA.. 
SE. 
IIP. 
B . phytophthorus from Appel. 
ANILIN WATER GENTIAN VIOLET 
B. atrosepticus . 
B . solanisaprus . 
B. melanoqenes . 
IIIA. 
SE. 
IIP. 
B . phytophthorus from Appel 
0. 4 to < 
7 
1. 3 to 2 
. 4 to 
•5 
1. 0 to 1. 6 
. 4 to 
•7 
1. 3 to 2. 1 
. . 5 to 
.8 
1. 5 to 2. 5 
• • 5 to 
.8 
1. 6 to 2. 5 
. 5 to 
•7 
1. 4 to 2, 9 
. 4 to 
.6 
. 5 to 1. 6 
o. 5 by i. 6 
. 5 by i. 2 
• 5 by i. 7 
. 6 by 2 
. 6 by 2 
. 6 by i. 9 
• S by I 
AQUEOUS METHYLENE BLUE 
B. atrosepticus . 
0. 4 to 0. 8 - 
1. 3 to 2. 3 
0. 5 by 1. 8 
B. solanisaprus . 
. 4 to .6 
1 to 1.9 
. 5 by 1.4 
B t melano genes .. 
.4 to .7 
1. 3 to 2 
- 5 by 1.7 
IIIA... 
. 5 to 1 
1. 7 to 3. 3 
. 6 by 2. 3 
SE. 
.5 to .8 
1. 6 to 2. 5 
. 7 by 2.1 
IIP. 
. 4 to .8 
1. 6 to 2. 9 
. 6 by 2 
B. phytophthorus from Appel. 
. 3 to .6 
• 7 to I- 3 
• 5 by .9 
ALKALINE METHYLENE BLUE 
B . atrosepticus . 
0. 4 to 0. 7 
I. 4 to 2. 3 
0. 5 by 1. 8 
B . solanisaprus . 
• 4 to .7 
I to 2. 2 
. sf b y 5 
B. melano genes . 
. 4 to .8 
I. 3 tO 2 . 4 
. 5 by 1. 9 
IIIA. 
• 5 to 1 
1. 7 to 2. 9 
. 8 by 2. 2 
SE. 
• 5 to .8 
i. 5 to 2. 5 
. 6 by a 
IIP. 
. 4 to .8 
i. 5 to 2. 8 
. 6 by 2 
B. phytophthorus from Appel. 
• 4 to .7 
. 7 to i. 4 
• 5 by .9 
AQUEOUS FUCHSIN 
B, atrosepticus, . . 
0. 4 to 0. 7 
I. 3 to 2. 3 
a 5 by 1. 8 
B. solanisaprus . 
.4 to .7 
1 to 2 
. 5 b y 4 
B. melanogenes . 
.4 to .7 
1. 3 to 2 
. 5 by 1. 6 
IIIA. 
• 5 to .8 
1. 6 to 2. 5 
. 7 by 2 
SE . 
• 4 to .7 
1. 5 to 2. 3 
. 6 by 1.9 
.4 to .7 
1. 3 to 2. 5 
. 5 by 1.8 
B . phytophthorus from Appel . 
. 3 to .6 
• S to 1. 3 
•5 by .9 
