and turkey were from a flock which showed heavy infection among the 

 chickens. One guinea hen was reported as a reactor, but all of tlie other 

 fowl were non-reactors. The jungie-fowl, tested witli another flock, were 

 both non-reactors. 



Since March 1, when the regular testing season closed, investigational testj 

 have been made on several flocks. In one of these, five ducks and 45 pigeons 

 were tested, none of which reacted to the routine agglutination test. These 

 birds were on a farm where a large niunber of reactors among the chickens 

 were detected earlier in the season. At the time the pigeons and ducks were 

 tested, three reactors which had been, reported at the previous tests, were 

 found among the 132 chickens. The object of making tests on fowl other 

 than chickens has been to determine, if possible, whether or not sucli birds 

 might be carriers of Salmonella pulloram infection. It is hoped the flock 

 owners will cooperate next season, so tiiat more work may he done on this 

 problem and if reactors are found, the results will be cliecked by nutop.sy 

 and bacteriological examination. 



Percentage of Total Birds Tested in Flocks 



A summary ot the percentage of toltil birds testetl in Hocks is given in 

 Table II. 



(^ne hundred and sixty-two flock owners (50.47 per cent) tested all chickens 

 on their premises and 85 (52.17 per cent) had non-reacting flocks. Only 12 

 of the 162 flocks were 100 per cent tested in 1926-27 and five of these were 

 without reactors. This demonstrates the increased interest which is being- 

 taken in the movement for total flock testing. 



In the 162 flocks there were 106,455 birds (55.84 per cent of the total birds 

 tested). In the 85 negative flocks in this group, there were 58,263 birds (54.73 

 per cent of the total birds in 100 per cent tested flocks). 



During the past season, 65 flock owners (20.25 per cent) tested 75 to 100 

 per cent; 43 flock owners (13.40 per cent) tested 50 to 75 per cent; and 51 

 flock owners (15.89 per cent) tested less than 50 per cent of all birds in their 

 flocks. 



Table III is a comparative study of flocks tested with the poultry popula- 

 tion in the State. The poultry population figures given in this table are froiii 

 the 1925 census report, while the data regarding the estimated number oi' 

 flocks in each county were supplied bj' the County Extension Service. Tiie 

 authors are indebted to Professor W. C. Monalian for these statistics. 



Plymouth County poultrymen tested 22.73 per cent of the birds in the 

 county and ranked first in percentage of poultry population tested in 1927-28, 

 50.28 per cent of all birds tested being in 100 per cent tested flocks. Tiiis 

 county, testing 6.8 per cent of its flocks of over 50 birds, ranked tlnrd in 

 percentage of flocks tested. 



Norfolk County, with 21.34 per cent, ranked second in percentage of poul- 

 try population tested, and 52.78 per cent of all Ifirds tested in the county 

 were in 100 per cent tested flocks. 



Barnstable County, with 16.05 per cent, ranked tifird in percentage ot 

 poultry population tested, and second lioth in percentage of flocks tested, 

 and in percentage of birds (95.63 per cent) showing no infection by means 

 of the agglutination test. Fifty-seven and nine-hundredtlis (57.09) per cent 

 of all birds tested in this county were in 100 per cent tested flocks. 



Hampshire County, witii 13.50 per cent, ranked first in jiercentage of flocivs 



