fr. 11. F. Nuttall and C. Strickland 
19 
Locality 
No. of rats 
examined 
No. of fleas 
collected 
Average No. of 
Ileas per rat 
I'JO;): March 3 
Cherryhinton Brook 
2 
5 
2-5 
„ 9 
,, 
27 
54 
2* 
„ 18 
1 
1 
5 
5' 
„ 19 
J 
1 
33 
33- 
April 29 
1 » 
4 
3 
0-7 
May 11 
)) 
3 
3 
1- 
June 7 
? J 
3 
2 
0-6 
„ 12 
^ ? 
2 
10 
5- 
„ 22 
j 
6 
11 
1-8 
July (i 
5 
5 
2 
0-4 
August 3 
1 
3 
3- 
„ 24 
Chesterton 
3 
1 
0-3 
„ 31 
Cherryhinton Brook 
2 
2 
1- 
September 8 
J > 
1 
2 
2- 
11 
? ) 
2 
12 
6- 
October 12 
) ) 
5 
9 
1-8 
„ 29 
> 
3 
7 
2-3 
November 10 
> } 
4 
5 
1-2 
„ 28 
i) 
9 
18 
2- 
December 15 
Comberton 
11 
5 
0-4 
1910: February 7 
Cherryhinton Brook 
2 
23 
12-5 
„ 28 
)> 
2 
2 
1- 
March 9 
> ? 
1 
15 
15- 
„ 22 
J > 
4 
12 
3- 
June 21 
> > 
2 
5 
2-5 
August 15 
) J 
4 
12 
3- 
November 14 
J > 
.3 
3 
1- 
1911: February 15 
J ) 
6 
9 
1 '5 
„ 28 
) J 
3 
5 
1-6 
October 28 
J 5 
1 
5 
5- 
September 15 
Chesterton 
5 
6 
1-2 
November 12 
Milton Eoad 
10 
4 
0-4 
„ 20 
Wilbraham 
12 
4 
0-3 
Totals 
150 
297 
2- 
2—2 
