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. S. Martinez for the care taken 

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