June, 1940] AGRICULTURAL RESEARCH IN N. H. 45 



13 per cent of all adult cases. Chronic coccidiosis and fowl pox were 

 third and fourth in order as stated. The disease known as blue 

 comb has within the past three years jumped from the unknown 

 into a position of leading importance. Ruptured egg yolk has been 

 in previous years the most important adult trouble but this year it 

 is definitely over-shadow^ed by blue comb. The incidence of fowl 

 pox was very high because of the epidemic which was present here 

 in the Northeast during the fall and winter of 1938-39. The princi- 

 pal diseases of chicks were as follows : ulcerated gizzards, 57 cases 

 or 21 per cent; chronic coccidiosis, 42 cases or 15 per cent; tremors, 

 34 cases or 13 per cent; pullorum, 26 cases or 10 per cent. Ulcerated 

 gizzard this year again has taken the place as the leading chick 

 disease. (Miscellaneous Income) 



