[nicholls] blood sera IN TUBERCULOUS INFECTION 



able, as we -were dealing with germs of such mild virulence and there 

 was a possibility of the animals recovering, to kill them at stated inter- 

 vals and determine the amount of tuberculcsis by the naked eye and the 

 microscope. By this method an exact appreciation of the state of things 

 could be obtained. By arranging them in pairs according to weight it 

 was also possible to compare animals of approximately the same degree 

 of resisting power. 



The subjoined table will- give at a glance the more important 

 features of the experiment : — 



N. B. — In the above table the numbers in italics were given normal goat serum 

 The weights and temperatures after inoculation are average. The animals are 

 grouped in pairs according to weight. 



In the above table I do not lay much stress upon the weights and 

 temperatures before inoculation inasmuch as observations were not made 

 for a sufficiently long time before the experiment was begun. 



