352 Transactions of the Royal Society of South Africa. 
Table XXVII {continued). 
Antiserum to 
Strain 3, Bl 
(B. No. 74! 
MacConkey). 
Bacillary emulsion 
\ Doses of complement. 
Complement 
deviated by- 
emulsion 
alone. 
3 D. 
5 D. 
15 D. 
20 D. 
3 D. 
5 I). 
, Strain of 
1 paracolon i 
0-05 c.c. 
1 bacillus. 
Dist. 
Mk. 
Al. com. 
Com. 
Com. 
0*025 
^ lactoss — , 
Dist. 
V. mk. 
Com. 
Com. 
! Com. 
Just c. 
0-01 
[' indol — , 
Mk. 
V. mk. 
' Com. 
Com. 
t Com. 
0-005 „ 
1 inosite — , 
Mk. 
Com. 
Com. 
Com. 
Com. 
— 
— 
glucose + , 
^ B 101 ' 
0-05 „ 
\ Strain of 
Trace 
Dist. 
Al. com. 
Com. 
Com. 
0-025 „ 
1 paracolon 
Dist. 
Mk. 
Just c. 
Com. 
Com. 
Com. 
0-01 
Dist. 
V. mk. 
Com. 
Com. 
Com. 

0-005 " 
) B103 ' 
Dist. 
Com. 
Com. 
Com. 
Com. 
0-05 „ 
^ Strain of B. f 
Mk. 
Al. com. 
Com. 
Com. 
Com. 
0-025 „ 
ycoli mutahilis } 
V. mk. 
Com. 
Com. 
Com. 
Com. 
Just c. 
Com. 
0-01 „ 
1 B103 before i 
Y. mk. 
Com. 
Com. 
Com. 
Com. 
0-005 „ 
j mutation \ 
Just c. 
Com. 
Com. 
Com. 
Com. 
Strain of 
] B105, ' 1 
I lactose — 
0-05 „ 
|- ( + after -^ 
Mk. 
Com. 
Com. 
Com. 
Com. 
Just c. 
Com. 
mutation). 
1 
inosite — , 
/ indol — V 
V strain of / 
1 B102, 
lactose — } 
0-05 „ 
[- ( + after 
V. mk. 
Com. 
Com. 
Com. 
Com. 
Just c. 
Com. 
1 mutation). 
inosite — , 1 
' indol—, ^ 
0-05 „ 
B. proieua 
Mk. 
Com. 
Com. 
Com. 
Com. 
Just c. 
Com. 
0*05 c.c. of antiserum alone deviated 1 D. of complement. 
Results observed ivith an a7itiserum to a B. type No. 1. — The specificity and 
group action of an antiserum to a strain belonging to one of the common 
types of sub-group B was also investigated. The antiserum to strain 3, Bl 
(B. MacGonhey No. 74), whose agglutinating properties have already been 
referred to, was employed for this purpose. 
It was found that the serum displayed no specificity either for the 
individual strain or the type to which it belonged. In fact certain strains 
of other different types within the sub-group B exhibited as much affinity 
(as determined by complement-deviation tests) for the serum as the strain 
