228 
THOMPSON YATES LABORATORIES REPORT 
I. Lokoja Town 
Age 
No. Examined 
Result 
O-I 
O 
1-2 
i positive 
An occasional ring form 
2 "3 
I 
3-+ 
O 
4-5 
2 
i positive 
Two crescents 
5-6 
6 
i positive 
A single ring form seen 
6-7 
o 
7-8 
i positive 
A single crescent 
8-9 
9-io 
2 
IO + 
7 
2 positive 
(1) Age 12-13 years ; few large quartan forms 
(2) Occasional ring form : age 10-1 1 years 
