534 
Journal of Agricultural Research voi. xxvi. no. h 
TablB IX.— Critical periods in the development of apple scald as shown by the results 
from oiled wrappers applied at different times in the storage season 
Description of apples and wrappers. 
Grimes Golden, Rockville, Md.; picked Sept. 3, 1920; 
notes taken Jan. 8, 1921: 
Unoiled wrappers. 
Mineral oil wrapper No. 3. 
Do. 
Do. 
Do. 
Grimes Golden, Wenatchee, Wash.; picked Sept. 20, 
1920; notes taken Feb. 12, 1921: 
Unoiled wrapper. 
Mineral oil wrapper No. 3a. 
From unoiled wrapper applied at picking time to 
No. 3a. 
Do. 
Do. 
Grimes Golden, Wenatchee, Wash.; picked Sept. 19, 
1921; notes taken Mar. 1, 1922: 
Unoiled wrapper. 
Mineral oil wrapper No. 4b. 
From unoiled wrapper applied at picking time to ' 
No. 4b.! 
Do.| 
From mineral oil wrapper No. 4b applied at picking j 
time to unoiled wrappers.i 
Do. ! 
Do..} 
York Imperial, Arlington, Va.; picked Sept. 27, 1920; ; 
notes taken Apr. 3, 1921: ! 
Unoiled wrapper.j 
Do.j 
Do.| 
Arkansas (Mammoth Black Twig), Winchester, Va.; j 
picked Oct. 18, 1920; notes taken Jan. 24, 1921: 
Unwrapped. 
Mineral oil wrapper No. 3.I 
Do.| 
Do.j 
Mineral oil wrapper No. 3a.j 
Do.j 
Rome Beauty, Wenatchee, Wash.; picked Oct. 20,1920;! 
notes taken May 18, 1921: 
Unoiled wrapper. 
Mineral oil wrapper No. 3a. 
From unoiled wrapper applied at picking time to 
No. 3a. 
Do. 
Do. 
Do.. j 
From mineral oil wrapper No. 3a applied at picking | 
time to unoiled wrapper.| 
Do. .! 
Do. 
Do. 
Rome Beauty, Wenatchee, Wash., picked Oct. 27, 1921; i 
notes taken Apr. 22, 1922: 
Unoiled wrapper. 
Mineral oil wrapper No. 4a. 
Wrappers applied. 
Degree of 
scald 
manifest 
after 
storage. 
Per cent. 
At picking time.. 
66 
.do. 
0 
Nov. 3, 1920. 
0 
Nov. 23, 1920 
2 
Dec. 10, 1920. . . . 
54 
At picking time.. 
25 
....do. 
0 
Oct. 27, 1920. 
0 
Nov. 11, 1920. . .. 
0 
Nov. 26, 1920.... 
1 
At picking time.. 
3 i 
.do. 
Oct. 3, 1921.. 
Oct. 21, 1921. 
Nov. 21, 1921. 
Oct. 3, 1921.. 
Oct. 21, 1921. 
Nov. 21, 1921. 
At picking time. 
_do. 
Nov. 3, 1920. ... 
Nov. 23, 1920. . . 
Nov. 11, 1920. 
Dec. 15, 1920. . 
Dec. 28, 1920. . 
Nov. 11, 1920. 
Dec. 15, 1920. . 
At picking time. 
.do. 
Nov. 20, 1920. 
Dec. 20, 1920. 
Jan. 21, 1921. 
Feb. 25, 1921. 
Nov. 20, 1920. 
Dec. 20, 1920. 
Jan. 21, 1921.. 
Feb. 25, 1921. 
At picking time. 
_do. 
o 
o 
o 
24 
*7 
24 
3 2 
o 
5 
18 
42 
2 
22 
35 
3 
23 
30 
o 
o 
o 
o 
II 
o 
o 
o 
o 
22 
o 
