W. F. Hahvey and a. M*^'Kendrick 
71 
curves correspondiog to normal and to test indices. The individual indices were 
based on counts of 100 leucocytes. The distributions were as follows : — 
Tiiberculo-Opsonic Indices. Normal Sera 30. 11.08 to 6. 3. 09. 

Index 
-- - 
Frequency 

Index 

Frequency 

Limits of Grouping 
•70 
1 
74 
•70 = -695 to -715 
■73 
0 
1^02 
56 
and so on. 
■u 
0 
VOk 
61 
1 
1 ■Oti 
39 
■78 
2 
1 08 
37 
■80 
4 
VIO 
24 
■82 
2 
1^12 
18 
■84 
12 
VH 
11 
■86 
12 
1-16 
7 
■88 
16 
1-18 
■90 
20 
V20 
3 
■92 
48 
1^22 
1 
■9k 
43 
1-2 k 
1 
■96 
49 
■98 
63 
Total 
610 
Tuherculo-Opsonic Indices. Test Sera 30. 11. 08 to 6. 3. 09. 
Index 
Frequency 
Index 
Frequency 
! Index 
Frequency 
Limits 
■28 
1 
■76 
12 
V24 
15 
■28 = -275 to -295 
■30 
0 
•78 
12 
1^26 
15 
■32 
0 
•80 
18 
1-28 
11 
■3Jt 
0 
■82 
29 
1-30 
9 
■36 
0 
■84 
28 
1^32 
5 
■38 
1 
■86 
47 
1-34 
3 
■40 
0 
■88 
36 
1-36 
6 
■42 
1 
■90 
47 
P38 
6 
■44 
1 
■92 
49 
V40 
4 
■46 
0 
■94 
47 
V42 
4 
•48 
0 
■96 
52 
V44 
1 
■50 
0 
■98 
51 
1^46 
0 
■52 
1 
VOO 
57 
V48 
1 
■54 
0 
1^02 
50 
1^50 
3 
■56 
0 
1^04 
43 
1^52 
1 
■58 
2 
1^06 
40 
V54 
1 
■60 
3 
1^08 
52 
V56 
2 
■62 
7 
VIO 
38 
V58 
3 
■64 
6 
1^12 
36 
V60 
1 
•66 
7 
V14 
20 
1-62 
2 
•68 
8 
V16 
24 
V64 
0 
•70 
5 
1^18 
16 
V66 
0 
9 
V20 
20 
1^68 
1 
■74 
15 
1'22 
15 
Total 
1000 
