296 



ORIENTAL PLAGUE 



CHAP. 



3. — Formalin 1 in 100, 5 minutes' exposure. Innumerable colonies. 



*" >l 5J » 5) 



l" J> JJ 33 33 



4. — Formalin 1 in 50, 5 minutes' exposure. Innumerable colonies. 



15 „ 33 



Series //.—March 28, 1904. 

 A. — Watery distribution of cyllin . 



T> _ 



-*-'• 33 33 33 



ft 



V - / * 3 3 J? J 3 



Time of exposure, 5, 10, and 15 minutes. 

 Cultures after exposure were made on sloped gelatine 

 (21° C.) and inspected on April 10, when all tubes were 

 found to be free of any growth. 



Series ///.—April 8, 1904. 



A. — Watery distribution of cyllin . . 1 in 1500 



B.— „ „ . 1 in 1000 



Time of exposure, 5, 10, and 15 minutes. 



Cultures after exposure were made on sloped agar and 

 in broth, and incubated at 37° C, inspection being made 

 on April 16, 1904. 



Result : All tubes free of any growth. 



Series IV. — April 7, 1904. 



A. — Watery solution of phenol 

 B. — „ „ formalin 



C. — Distribution of cyllin 



D — 



E. — 



1 in 80 

 1 in 30 

 1 in 2000 

 1 in 1800 

 1 in 1600 



Time of exposure, 5, 10, and 15 minutes 



