36 



MASS. EXPERIMENT STATION BULLETIN 273 



Table 6. — Results of ixoculation with Berkei'eld V filtrate of 

 Gran BY virl^s. 



* Berkefeld V Filtrate of Granby virus used. 

 ** Unfiltered Granby virus from MC 60840 used. 



The Unfiltered Granby Virus 



A Rhode Island Red fowl and tvo Plymouth Rock fowls were inocu- 

 lated intratracheally with the unfiltered portion of the Granby virus 

 suspended in physiological saline solution. The results of this experiment 

 are recorded in Table 7. 



This experiment indicates that the unfiltered Granby virus was more 

 virulent than any of the filtered portions. 



