from various animals also handled by the laboratory personnel. There were 

 300 cases ( 794 samples ) of blood submitted for immunity tests. 



A. C. Corbett, Richard Strout, W. R. Dunlop, F. E. Allen 



Puilorum Testing 



Testing of poultry for puilorum disease is done at the Poultry Laboratory. 

 During the fiscal year, 1.246,701 birds were tested by means of the tube 

 agglutination test. In addition, 48,496 retests were made, for a total of 

 1,295,197 samples tested for the year. 



Of 382 flocks tested, none were found to harbor infection. 



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



Poultry Vaccines 



The Poultry Laboratory has continued to manufacture the field strain 

 of infectious bronchitis virus, and after testing for purity and potency it 

 is sold to poultrymen of the state for inoculation of their susceptible birds. 

 During the fiscal year, 292 lots of this virus were supplied to New Hamp- 

 shire poultrymen. 



We have also continued the manufacture of the experimental Newcastle- 

 bronchitis spray vaccine developed at this Station. During the fiscal year, 

 607,300 doses were furnished New Hampshire poultrymen from July 1 

 until the termination date of the project on December 31, 1956. 



A. C. Corbett, W. R. Dunlop, Richard Strout 



Dairy Bacteriological Testing 



During the year 406 milk test bottles and 84 pipettes were calibrated. 



Other services covered include the supplying of the Babcock glassware 

 and acid to the D.H.I.A. testers and the testing of milk samples for 

 bacteria, fat, and solids. 



H. C. Moore 



