VIII 



t x obs. in cc. x calc. in cc. 



950 0,0011 949,7 0,0011 

 0,3 555 0,0018 536,3 0,0019 



1 333 0,0030 333,3 0,0030 

 3 207 0,0048 200,8 0,0050 

 5 167 0,0060 157 0,0064 

 8 125 0,0080 124.7 0,0080 



11 100 0,0100 106,6 0,0093 

 15 91 0,0110 91,6 0,0110 



The observed values agree very well with those cal- 

 culated. How satisfactory the correspondence is, appears 

 perhaps better from the figures in the columns besides. 

 These indicate in cc. the doses of serum, of which the 

 resp. agglutinin units are the reciprocal values. It must 

 be remembered that such doses as, for inst., 0,0018 cc. 

 are only interpolated. In this series of test tubes the 

 degree of agglutination used for the test was found to 

 be higher than that of 0,0017 cc. and lover than that of 

 the next tube containing 0,002 cc. Being nearest the 

 first it was judged to correspond to 0,0018 cc. 



It was stated above that the value of n partatonne- 

 ment was found = 2. A smaller or greater value of 

 this constant would change the straight line into a 

 curve bending downwards or upwards. 



The figures of a few of the experiments mentioned 

 in the preceding paper are given in the following. 



Rabbit Q, curve No. 12. 



n = 0,5 



in cc. 

 0,007 

 0,013 

 0,022 

 0,033 

 0,044 

 0,060 



