W. Nicoll 
187 
After an exposure to the sunlight the plates were removed indoors 
and water was added to all except Nos. 1, 3, 17 and 19. They were 
then kept in the room for ten hours. Cultures were made daily for 
the following four days. 
The following table shows the result. 
26/4 
27/4 
28/4 
29/4 
1. 
- 
- 
- 
- 
2. 
- 
- 
- 
- 
3. 
- 
- 
- 
- 
4. 
- 
- 
- 
- 
5. 
+ 
- 
- 
- 
6. 
- 
- 
- 
- 
7. 
+ 
+ 
+ 
+ 
8. 
+ 
+ 
+ 
+ 
9. 
- 
- 
- 
- 
10. 
+ 
+ 
+ 
+ 
11. 
- 
- 
- 
- 
12. 
- 
- 
- 
- 
13. 
- 
- 
- 
- 
14. 
- 
- 
- 
- 
15. 
- 
- 
+ 
+ 
16. 
+ 
+ 
+ 
+ 
17. 
- 
- 
+ 
+ 
18. 
+ 
+ 
+ 
+ 
19. 
- 
- 
- 
- 
20. 
- 
- 
- 
+ 
21. 
+ 
+ 
+ 
+ 
22. 
+ 
+ 
+ 
+ 
23. 
+ 
+ 
+ 
+ 
24. 
- 
- 
+ 
+ 
The results of the first two 
series may 
be combined in the subjoined 
table. 
26/4 
27/4 
28/4 
29/4 
1. 
- 
- 
- 
- 
2. 
i 
± 
± 
± 
3. 
- 
- 
- 
- 
4. 
- 
- 
- 
- 
5. 
± 
- 
- 
- 
6. 
- 
- 
- 
- 
± 
± 
+ 
+ 
8. 
+ 
+ 
+ 
+ 
The chief discordant result here is in 
the case 
of No. 2 in which 
the faeces were surrounded with water and exposed in a covered dish. 
Possibly an exposure of li hours is not always sufficient to kill all the 
eggs in this case. 
Parasitology ix 
13 
