86 



30 



20 



Other 

 Causes. 



10 



£nter/tic. 



20 



iO 



Enter/tic. 



Other 

 Causes. 



Enter it ic. 



Other ^ 

 Causes. 



Other 

 Causes. 



Enterltic 



DR, N. S. LUCAS ON 



Chart No. I. 











Seed 



-Eat 















\ 





\ 



/ 





/ 



K / 

 ^^>-^ 



/\ 



/ \ 



> 



\ 



\ 



V. 



, 





// 

 ^ 1 



'/ \ 



v\ 



/ 



/ 



V 



























Chart No. II. 









/nse 



ct&F 



•uit E 



9ters. 



























. — -• — 









- — • 









\ 



\.— 









Chart No. III. 



F'esh-i-.atert: 



Chart No. lY. 











Wate 



1 fO]A/ 



f & V\ 



'aders 















■^/^ 



A. 

 / \ 







S 



N 



> 











In these charts the deaths caused by enteritis are shown in a continuous line, those 

 due to all other causes in an interrupted line. 



The birds are grouped according to the food eaten, though in the last group the chief 

 point is that these birds live mostly in the open and their food is scattered on the 

 ground and not placed in a receptacle. Enteritis is less prominent in this group, 

 on the whole, and most prominent in Group II., where the food is of the sort 

 which forms a good culture medium for bacteria and is almost always put into 

 receptacles. 



