128 
THOMPSON YATES LABORATORIES REPORT 
TABLE IV (c) 
Experiment III 
Sept. 25, 1900, 
10-15 a - m - 
B. coli per grm 
Sept. 25, I-50 
p.m., after 3 y 2 
hours' 
intermittent 
sunshine. 
B. coli per grm. 
Sept.25, 5 p.m.. 
after 41^ hours' 
intermittent 
sunshine. 
B. coli per grm. 
Sept. 26,5 p.m., 
no sun all day. 
B. coli per grm. 
Sept. 28, after Oct. 6, C. and 
hours 
sunshine. 
B. coli per grm 
D. after about 
38 hours' light 
B. coli per grm 
Oct. 22, 
D had 
exposure to 
55 hours 
light. 
B. coli per 
grm. 
Petri-dish— 
(A) Exposed to 3,800,000 
sunlight, and al- 
lowed to dry 
(B) Exposed tcl 4,250,000 
sunlight, and 
kept wet 
(C) In the shade. 2,250,000 
and allowed to 
dry 
(D) In the shade. 3,640,000 
and kept wet 
(E) In the dark, 4,300,000 
and allowed tc] 
dry 
(F) In the dark 
and kept wet 
3,420,000 
547,ooo 
Absent in 
.03 grm 
1,030,000 
420 
405,000 
Absent in 
• 3 g rm - 
354,000 
5 
1,450,300 
7 
,090,000 
Absent in 
•3 grm 
Absent in 
■3 g rm 
1,650,000 1,912,000 
plate broken 
Absent in 
•3 grm 
800,000 
Absent in 
.6 grm 
1,600,000 
82,500 
66,000 
TABLE V (a) 
Experiment I 
No. 
Time 
No. of hours' 
exposure to 
current of dry 
air 
Appearance on plate (pi 
paper incubated for 24 
with 10 c.c. broth and 
plated). 
ece of 
hours 
1 c.c. 
I 
Oct. i, 1900, 10-55 a - m - 
O 
00 Colonies 
2 
„ „ i 2-45 noon 
2 
CO ,, 
3 
2-55 p.m. 
00 ,, 
+ 
„ „ 5-10 p.m. 
5 
,, 2, ,, 10 a.m. 
9 
6 
2-45 p.m. 
28 
Sterile 
7 
,, 3, „ 9-40 a.m. 
*\ 
Sterile 
