52 
Research Bulletin No. 1 
SMEAE INOCULATIONS ON EYE, LENTICEL, OR SURFACE OF EARLY OHIO. 
Inoculations, with or without medium, made directly upon 
the eye, lenticel, or other surface of the tuber gave no infection 
in any case. Of course in all such cases the surface was un- 
broken. 
Table 13. — Results of a large number of inoculations made 
March 21, 1910. on Early Ohio tubers which were subse- 
quently kept in an atmosphere having a very high humidity. 
Part 
inoculated 
No. of 
tubers in- 
oculated 
No. of 
inoculations 
per tuber 
Tempera- 
ture 
No. of 
successful 
inoculations 
Extent of 
rot 
Eye puncture . . 
5 
1 
8 to 10° C. 
30 
Eye surface. . 
5 
8 to 10 C. 
'0 
Eye surface. . . . 
5 
6 
8 to 10 C. 
0 
Lenticel surface 
5 
6 
8 to 10 C. 
0 
Lenticel surface 
5 
6 
8 to 10 C. 
r 0 
Other than len- 
ticel surface . . 
5 
6 
8 to 10° C. 
0 
Other than len- 
ticel surface. . 
5 
6 
8 to 10" C. 
0 
Epidermis r e- 
moved . 
5 
6 
8 to 10 3 C. 
18 
Prominent ; 
| in. in 
Epidermis r e- 
diameter 
moved 
5 
6 
8 to 10" C. 
4 
Surface punc- 
ture ... .... 
10 
6 
8 to 10' C. 
60 
Figs. 5, 6. Inoculation of Early Ohio tubers by removal of the skin. 
Photographed four weeks after inoculation. Kept in a moist chamber 
containing a small dish of water; the first week at 8° to 10° C. and 
then at laboratory temperature. No medium employed. 
The last three sets in the above summary were on March 28 
removed to moist chambers with OaOl, and kept at the tempera- 
ture of the laboratory. 
