112 
Biology of Ixodidae 
Time the tick remains upon the host. 
Progeny 
of ¥ No. 
Host 
Date when 
put on host 
Host main¬ 
tained at a 
temperature of 
Number of gorged 
larvae collected on 
succeeding days 
Lot a 1 
Calf 
25. X. 1911 
16^ C. 
16 on day 7 
20 
„ 8 
16 
„ 9 
42 
10 
53 
„ 11 
27 
„ 12 
11 
„ 13 
40 
„ 14 
38 
„ 15 
2 
Calf 
28. XI. 1911 
16° C. 
369 
on day 5 
350 
„ 6 
80 
„ 7 
3 
Calf 
4. V. 1912 
— 
313 
on day 4 
160 
„ 5 
5 
Calf 
15. III. 1912 
7° C. 
14 on day 3 
219 
„ 4 
130 
,, 5 
42 
„ 6 
9 
Calf 
16. II. 1912 
15° C. 
95 
on day 4 
12 
.. 3 
18 
Calf 
29. X. 1912 
11° C. 
52 
on day 4 
240 
„ 5 
60 
„ c 
20 
Calf 
24. VII. 1912 
22° C. 
27 on day 3 
1040 
„ 4 
176 
„ 5 
70 
„ 6 
45 
M 7 
23 
Calf 
28. XI. 1912 
7° C. 
12 
on day 4 
53 
„ 5 
416 
» 6 
224 
„ 7 
22 
„ 8 
6 
„ 9 
Lot b 
Hedgehog 23. iv. 190-5 
13° C. 
on days 5-11 
