10 
September 17, a similar study of twenty-one successive plants was 
made in another portion of the same field. (See Table III). 
TABLE III. 
| l 
x Loss by | 
Plants. Worms. | Good polls.| plone other hore 
| : ly causes, 
exe 1 | 33 4 13 50 
ARE Pe 1 23 1 ] 25 
Soon 2 GO 3 2 | 65 
Lee fe 0 30\:"| 3 I yt 34 
Dcletermrs(a= 2 41 3 8 52 
62532525 0 65 3 0 68 
aterarai oie L 11 1L 4 16 
Beattie 0 29 1 1 31 
| ren eee 0 53 3 1 57 
1K (ae See 2 53 5 1 59 
ot ene ss 1 24 5 14 43 
Mp ae ne 0 63 6 25 94 
es - 0 24 0 5 29 
A: Ns rane pane 0 19 8 By 30 
a 0 23 9 12 44 
LDS een 3 88 13 20 131 
ics ae 0 22 4 5 31 
1 oe er 0 36 0 2 38 
1 Bee 0 14 0 0 14 
2 eee 0 20 0 11 3h 
yA Lea eae 0 49 6 39 94 
Total 13 | 780 78 178 1, 036 
Table I should not be included in the table of percentages, since its 
data were obtained early in the season, before the Boll Worm had really 
become well established in cotton. Omitting table I we have the fol- 
lowing table: 
TABLE IV. 
Percentages from Tables II and ITT. 
Loss mm 
Tahla ‘ Loss by r . Total | 
Table. | Good bolls. ‘Boll ge ably Teel 
| Per cent. | Per cent. | Percent. | Percent. 
|e CR | 690 | 092. | 218} = 310 
[SL oe Sage Ae, | 753 | 075 | TD ga tee 
Average - 71215 0835 «195 . 2785 | 
The four preceding studies were nade by a count of what was actu- 
ally found on the plants at the time of observation. September 18 only 
bolls and forms which had fallen were collected and examined. The 
result is given below : 
Number bored ‘by Boll Worm). ..-.si.-ceeeeateis- oc cc oem eatoeeptece meee nena 167 
Number’shed from.other :canses <2222< Gace ee eee oases oe cee eee eee eee eee 362 
Total2 sec sce Se oe ela oc ee ee Ce oe 529 
Taking the average of the total loss found in the same field on the 
two preceding days, and tabulated as Tables IT and III, and again in 
Table IV, these 529 bolls may be considered as equivalent to the count- 
