R. T. Wells 
211 
Serial 
Presence of 
No. 
Date 
Conditions of experiment 
amoebae 
Remarks 
20 
18th Aug. 
Plate left out on table of Jail Office 
without preliminary exposure to air 
- up to 6th Sept. 
Medium overgrown 
by moulds. 
21 
12th Dec. 
Uninoculated Petri plate left out on 
laboratory table without previous 
exposure to air 
-b3rd Jan./1911 
Cysts of types (a) &(b). 
22 
12th Dec. 
Petri plate first opened and exposed 
to the air for 5 minutes, then left 
out on laboratory table as before 
- up to 3rd Feb. 
Medium dried. 
23 
12th Dec. 
Similar to above but preliminary ex¬ 
posure to air 10 minutes 
- up to 3rd Feb. 
>5 >» 
24 
12th Dec. 
Similar to above but preliminary ex¬ 
posure to air 20 minutes 
-f 3rd Jan. 
Cysts of types {a)&{b). 
25 
12th Dec. 
Similar to above but preliminary ex¬ 
posure to air 30 minutes 
+ 3rd Jan. 
>> J) 99 
26 
12th Dec. 
Similar to above but preliminary ex¬ 
posure to air 1 hour 
-f3rd Jan. 
99 99 99 
27 
12th Dec. 
Similar to above but preliminary ex¬ 
posure to air 1| hours 
-l-3rd Jan. 
99 99 99 
28 
12th Dec. 
Similar to above but preliminary ex¬ 
posure to air 2 hours 
-f 13th Jan. 
99 99 99 
29 
12th Dec. 
Petri plate left out on window-sill in 
Hospital 
-l-3rd Jan. 
99 99 99 
30 
12th Dec. 
Petri plate left out on window-sill in 
Hospital General Ward, without 
preliminary exposure to air 
- up to 3rd Feb. 
Medium dried. 
31 
12th Dec. 
Petri plate left out on table in Hos¬ 
pital Office without preliminary ex¬ 
posure to air 
-f 6th Jan. 
Cysts of types (a)&(6). 
32 
12th Dec. 
Petri plate left out on floor of P. D. 
Gang Ward without preliminary ex¬ 
posure to air 
- up to 3rd Feb. 
Medium dried. 
33 
12th Dec. 
Petri plate left out on floor of No. 1 
Ward Jail without preliminary ex¬ 
posure to air 
- up to 3rd Jan. 
9 9 9 9 
34 
12th Dec. 
Petri plate left out on ledge near top 
of Central tower of Jail, without 
preliminary exposure to air 
- up to 3rd Jan. 
99 99 
35 
12th Dec. 
Petri plate left out on window-ledge 
of tank room without preliminary 
exposure to air 
- up to 3rd Jan. 
9 9 99 
36 
12th Dec. 
Plate left out on table of Super¬ 
intendent’s Office without previous 
exposure to air ' 
- up to 3rd Jan. 
9 9 9 9 
