In addition, 43,621 samples were retested, thus giving a total of 

 1,406,175 samples tested for the year. 



Of 414 flocks tested, one was found to harbor infection. Thus .00044 

 percent of the birds under test were infected. 



A. C. CoRBETT, F. E. Allen, W. R. Dunlop 



Infectious Bronchitis Virus 



The Poultry Laboratory has continued to grow infectious bronchitis 

 virus on embryonating eggs, and after being tested for purity and potency 

 it is sold to poultrymen of the State for inoculation of their susceptible 

 birds. During the fiscal year, 535 lots of this virus were supplied to New 

 Hampshire poultrymen. 



A. C. CoRBETT, F. E. Allen, W. R. Dunlop 



Dairy Bacteriological Testing 



During the year 1954-55 456 milk test bottles and 90 pipettes were 

 calibrated. 



Other services covered under Dairy Bacteriology Testing include the 

 supplying of the Babcock glassware to the D.H.I.A. testers. 



H. C. Moore 



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