4 AMERICAN POULTRY ASSOCIATION 



to half-tone illustrations of retouched and idealized photographs 

 of living specimens. These appeared in the 1910 edition after 

 having been approved by the Thirty-fifth Annual Convention. 



It has been the general policy of the American Poultry Asso- 

 ciation to revise the Standard of Perfection every five years, this 

 work being most carefully done by Revision Committees chosen 

 to represent as far as possible the interests of all sections of the 

 country and of the different breed classifications. 



The last Revision Committee was appointed at the Thirty- 

 sixth Annual Meeting at Denver, Colorado, 1911, and the present 

 or 1915 edition of the Standard of Perfection includes the 

 changes and additions made by this Committee with such further 

 changes or amendments as were voted by the Association at 

 its Thirty-eighth and Thirty-ninth Annual Meetings in 1913 

 and 1914. 



The 1915 Standard is the basis for the present work, "The 

 Plymouth Rock Standard and Breed Book," every detail apply- 

 ing to this breed in the main Standard being reproduced ver- 

 batim in this work. 



