254 
On Theories of Association 
TABLE XXII. Immunity and Severity of Vaccination Table after a Yulean 
Equalisation Process. 
Period since 
Vaccination 
Haemorrhagic 
Confluent 
Abundant 
Sparse 
Very Sparse 
Totals 
0—10 
0 
0-9 
2-8 
5-1 
5-6 
14-4 
10—25 
4-4 
32-8 
52-8 
76-4 
63-0 
229-4 
25—45 
25-7 
137-4 
138-5 
124-1 
83-8 
509-5 
.844-5 
Over J)5 
9-7 
3.1-0 
22-2 
15-3 
13 0 
91-2 
Unvaccinated 
37-1 
565-5 
198-4 
33 9 
9-6 
844-5 
Totals 
76-9 
767-6 
414-7 
254-8 
175-0 
1689-0 
844-5 
844-5 
Diagrams XII and XIII. Intensity of Vaccination and Severity of Disease treated by the method oi 
pseudo-ranks. 
Assumed unit grades. (^1) original data, (B) Haemorrhagic and Confluent made 50 °/ 0 
and vaccinated made 50 °/ Q . 
(i) Regression of intensity upon severity. (ii) Regression of severity upon intensity. 
Diagram XII. 
(i) 
0-10 
| 10-25 
25-45 
45 
Un vac- 
cina ted 
t- - - - . _ 
A 
-*' j,^— 
- ? 
Haemorrhagic. 
Confluent. Abundant. 
Severity of Attach. 
Sparse. 
Very Sparse. 
