404 



Scientific Proceedings (131) 



Quinine, HCL — . — 1 ^ n . ^ nn 



* 1% 5 min. + 10 min. — ; 10 mm. + 30 



+ — 1000 + 



rain. — 



Chitenin, HCL .. _ . ~}~ 1A . ^_.~j~ ir . 



' 1% o rain. + 10 mm. — ; 5 mm. + 10 



— — 1000 + 



? — 

 min. + 30 min. — 

 + — 



Chitenin, Na salt 1 



10 min. + 30 min. + 



500 • + — 



H acid 1 1 



30 min. + (24 hrs. — ; 24 hrs. + ) 



200 1000 



Staphylococcus 



Quinine, HCL 1 m 1 



5 mm. 4-, 10 mm. — ; 30 min. 4- 



200 1000 



Chitenin, HCL 1 



— 5 mm. 4-, 10 min.?, 30 min. — 

 50 



H acid 1 _ . 1 - . . - A . 



o mm. — ; o mm. 4-, 10 min. — 



200 500 



Bacillus Colt 



Quinine, HCL 1 . . 1 



1% 5 min. — ; 5 min. +, 10 mm. — ; 



200 ? 500 



Chitenin, HCL g 3Q w _L 30 



200 



min. + 



Bacillus Typhosus 



H acid 1 + 



30 min. + 



200 



Quinine, HCL 1 1 



5 min. — ; 5 min. 4- 



200 500 



Chitenin, HCL 2% 10 min. +, 30 min. — ; 1% 30 min. + 



H acid 1 1 



10 min. +, 30 min. — : 30 min. 4- 



200 500 



In these studies it is evident that the Gran staining cocci are 

 more sensitive to the acid chitenin than are the negatively stain- 

 ing bacilli, coli and typhosus. This fact is in striking contrast 

 to the results which Churchman 4 has obtained with the basic and 

 the acid anilin dyes in which the Gram staining organisms are 



