Tables I— XXXII, 



1 he iiH-aniiigs ol' llie abhievialions and of llu- ligures given in Uie Tables 

 are as follows: 



A. A. Ihe Absolule Amount of Ihe ininume-serum, measured in c. cm., needed 

 lo produce a degree of agglutination equal lo thai present in the lest- 

 tube selected as standard. 



li. A. the Relative Amount of the immune-serum necessary to produce the 

 given degree of agglutination. The actual amount of the serum whicli 

 is taken as equal to unity here is given, in c.cm., beneath the letters 

 themselves. 



The sign > placed in front of a set of ligures in the Tables indicates that 

 tliis amount of agglutinating immune-serum produces either no agglut- 

 ination or an agglutination less than that present in the test-tube selected 

 as standard. 



The sign < placed in front of a set of figures in the Tables indicates that 

 this amount of agglutinating immune-serum produces a stronger agglut- 

 ination tlian that present in the test-tube selected as standard. 



When two sets of figures arc i)ul together in a cohnnn in place of the usual 

 single ligure, as occurs for the first time in Table II, Series iS, in the case of the 

 emulsion heated u|) lo 90 , this implies that such a set of tubes began at some 

 point in a "zone of inhibited agglutination ". The eflect of this is, that there are 

 two tubes lower down in the set shewing a degree of agglutination equal to that 

 seen in the tube selected as standard, Madsen's method of measurement being 

 employed. 



When three sets of figures are given together in a column, the sign > or < 

 will always be found in front of, at least, one set. 



