THE 



iPEINCIPLES OF BREEDING: 



OK, 



GLIMPSES AT THE PHYSIOLOGICAL LAWS 



IXVOLVED IN THE 



REPRODUCTION AND IMPROVEMENT 



DOMESTIC ANIMALS. 



BY 



S. L. GOODAI^E, 



SECBETAHY Or THE MAINE BOAllD 01' AGniCULTDBE. 



BOSTOX: 



CROSBY, NICHOLS, LEE AND COMPANY, 



117 Washington St. 



1861. 



