PROTECTIVE INOCULATION. 



233 



Table I. — Combined table eom/iaring efficiency, etc. — Continued. 

 LIVING PEST AVIRULENT STRAIN I. 



Kind of animal and Horics No. 



Number 

 inoc- 

 ulated. 



Number 

 dead 



before 

 immunity 



tested. 



Immunized. 



Number. 



Percent- 

 age. 



Monkeys: 



Series 4 



6 

 6 

 8 

 10 

 16 





6 



1 

 4 

 6 

 8 



88 

 20 

 60 

 60 

 63 







Series 12 





Series 18 





Series 51 





Total 





44 





23 



62 



Guinea piers: 



Series 32 





11 

 9 

 15 

 21 

 16 



5 

 2 



6 

 6 

 8 

 16 

 12 



83 

 86 

 63 

 71 

 80 



Series S7 



Series 39 



Series 41.. 





Series 46 





Total 





71 



7 



64 



72 





LIVING PEST AVIRULENT STRAIN II. 



Monkeys: 



Series 17 . . ... 



4 

 12 

 18 

 15 





3 

 8 

 13 



7 



75 

 66§ 

 92 

 50 



Series 21 





Serie824 



4 



1 



Series 52. 



Total 



49 



6 



31 



70 



Guinea pigrs: 



Series 33 



10 

 7 



15 

 15 



3 

 1 

 1 

 1 



7 

 4 

 11 



14 



100 

 66} 



78 



100 



Series 38 



Series 40 . .. 



Series 47 



Total 



47 



6 



36 



88 





EXTRACTS OF PLAGUE BACILLUS (FREE 



RECEPTORS). 







Monkeys: 



Series 7. 



4 

 5 





1 



1 



26 

 20 



Series 26 i 





Total 





9 





2 



22 





ARTIFICIAL AGGRESSIN. 



Monkeys: 



Series 29 (total) 



32 





4 



12j' 



Guinea pigs: 



Series 29 





2 







 

 • 1 

 

 2 







16} 

 



60 



Series 30 



2 

 6 

 12 

 4 





Series 31 





Series 36 





Series42 





Total 





26 





3 



11 







