INFECTIOUS TRACHITIS 



1'able 17. — Results of inoculation aaith the first California virus 



unfiltered. 



Date 



Chicken No. V 2231 



Chicken No. V 2233 



Chicken No. V 2388 



6/28/30 Inoculated 

 7/1/30 Symptoms of 



7/2/30 infectious trachitis 



7/7/30 Dead 



7/9/30 (Lesions typical of ' 

 infectious trachitis) 



Inoculated 



Symptoms of 

 infectious trachitis 



Dead 



(Lesions typical of 

 infectious trachitis) 



Inoculated 

 Symptoms of 

 infectious trachitis 



Dead 



(Lesions typical of 



infectious trachitis) 



The Filtrability of the Second California Virus 



Tracheal exudate from chickens V 220.5 and V 2211 was used to pre- 

 ])are Berkefeld W, X, and V filtrates according to the method reported 

 previously in these experiments. Chickens Mere inoculated intratrache- 

 ally with these filtrates and the results noted in Tables IS, 19, and 20. 



Table 18. — Results of inoculation with Berkefeld W filtrate of the 

 SECOND California virus. 



Datt 



Chicken No. V 2204 



Chicken No. V 2206 



6/3/30 



6/16/30 

 6/20/30 



Inoculated* 



No symptoms of disease 

 Inoculated** 

 Dead 



(Lesions of infectious 

 trachitis) 



Inoculated* 



No symptoms of disease 

 Inoculated** 

 Dead 



(Lesions of infectious 

 trachitis) 



* Berkefeld W Filtrate of the second California virus used. 

 ** Virus from Chicken V 2211 used. 



Table 19. — Results of inoculation with Berkefeld X filtrate of the 

 SECOND California virus. 



Date 



Chicken No. V 2385 



Chicken No. V 2386 



Chicken No. V 2387 



* Berkefeld N Filtrate of the second California virus used. 

 ** Virus from Chicken V 2232 used. 



