PREFACE 
ciated with, particular disorders, may do so 
with profit by obtaining fuller works on the 
subject. Many scientific workers are de- 
voting their time to the problem of combat- 
ing diseases among poultry, and assistance 
is willingly given by officers of the ex- 
periment stations to farmers who desire to 
identify any disease causing loss in their 
flocks. 
The practical poultryman will recognize 
the fact that measures for the control of 
disease cannot be limited to sanitation 
and the treatment of sick birds, but, in 
reality, include such important matters as 
the selection of healthy stock, intelligent 
feeding, proper housing, and other details 
essential to the successful management of 
poultry. 
I gratefully acknowledge my indebted- 
ness to the works of Dr. D. E. Salmon and 
John H. Robinson, editor of Farm Poultry, 
and to the recent publication on poultry dis- 
eases by Dr. Raymond Pearl, Frank M. 
Surface, and Maynie R. Curtis. My thanks 
are due to R. 8. Martinez for the care taken 
vl 
