36 



THE WEIL-FELIX REACTION 

 TABLE V. TESTS DONE ON IMMUNE SERA 



Test done on Typhoid immune serum 



Test done on Paratyphoid A immune serum 



Test done on Paratyphoid B immune serum 



TABLE VI. REPETITIONS OF TESTS ON NORMAL SERA 



* T indicates B. typhosus. 

 A indicates B. paratyphosus A. 



B indicates B. paratyphosus B. 



Metz and Syrie refer to the two strains of B. proteus X 19 used. 



SUMMARY OF THE TABLES OF CONTROLS 



The two Bacillus proteus cultures, Metz and Syrie, were very 

 rarely agglutinated by any of the control sera, and then only in 

 a very low dilution, the highest being 1-50. The cultures of 

 Bacillus typhosus , Bacillus paratyphosus A, and Bacillus para- 



