14 



MASS. EXPERIMENT STATION BULLETIN 323 



Table 7. --Further observations on six reactors in Flock A. 



Bird Date Routine Date of 



No. Detected Tube Test 



Test 



1 :25 10 20 



Tube Test 



Dilution 

 40 80 160 320 640 



Whole Date of S. 



Blood Necropsy pullorum 

 Test Isolated 



93372 10/8/34 1 



93394 10/8/34 1 



93523 10/9/34 



93527^ 10/9/34 4 



93550 10/9/34 



93540 1/4/35 



f 10/8/34 II U 

 Id 17 34 

 10/23/34 

 10/27/31 NT 



1 10/30/34 



f 10/8/34 3 2 



1 10/17/34 1 



\ 10/23/34 1 



10/27/34 NT 



10,30/34 2 1 



{ 10/9/34 4 4 

 10/17/34 4 4 

 4 10/23/34 4 4 



10/27/34 NT 



(10/30/34 4 4 



f 10/9/34 4 4 

 10/17/34 4 4 

 10/23/34 4 4 

 ! 10/27/34 NT 

 110/30/34 4 4 



'10/9/34 4 

 10/17/34 3 

 10/23/34 3 

 10/27/34 4 

 10/30/34 4 

 11/7/34 4 

 11/10/34 4 

 11/15/34 4 

 11/20/34 4 

 11/30/34 4 

 12/13/34 4 

 12/19 34 4 

 12/21 34 1 



/ 1/4/35 4 

 \ 1/9/35 4 



4 4 

 4 4 



\ 10/30/34 Negative 

 



1 1 

 I 

 \ 

 



o J 



2 1 

 2 



3 

 

 1 



10/30/34 Negative 



10/30/34 Positive 



10 .30/34 Positive 



12/21/34 Positive 



NT 



}' 



/9/35 Negative 



U — unsatisfactory test 

 NT — not tested 



Flock B. On October 2 and 3, 1934, 826 birds were tested with the whole blood 

 test, using the apparatus equipped with the water heater. The testing operations 

 were conducted in the same manner as described for Flock A. The first test 

 represents only a partial flock test since not all the birds had been taken in from 

 range. Among the 826 birds tested, 29 reactors were detected. The blood of one 

 bird (92237) exhibited a delayed reaction which was observed only after the 

 bird had been returned to the flock. This bird was not regarded as a reactor and 

 will be mentioned again in the discussion of subsequent tests. Of the 29 reactors, 

 six were submitted to the laboratory for further study and the remainder were 

 slaughtered. 



On October 31 and November 2, 1934, 1120 birds (349 first test and 771 second 

 test) were tested by the whole blood method. Eleven reactors were detected 

 among the 349 first-test birds. Again one bird (99017) gave a delayed reaction 

 but was not removed from the flock until a later test. Of the eleven reactors, 

 five were submitted to the laboratory and the remainder were slaughtered. 

 Among the 771 birds tested for the second time, two reactors were detected and 

 removed for slaughter. 



