PRINCIPLES AND PRACTICE 



BUTTER-MAKING 



A. TREATISE ON THE CHEMICAL AND PHYSICAL PROPERTIES 



OF MILK AND ITS COMPONENTS 



THE HANDLING OF MILK AND CREAM, AND THE 

 MANUFACTURE OF BUTTER THEREFROM 



BY 



G. L. McKAY, 



Professor of Dairyino in the Iowa State College, Ames, la. 



AND 



C. LARSEN, M.S.A. 



Professor of Dairy Husbandry, Ko. Dak. Slate College, Brookin-ji, >'. I), 

 formerly Associate I'rojessur, Iowa State College, Ames, la. 



SECOND EDITION, REVISED AND ENLARGED. 

 FIRST THOUSAND 



JOHN WILEY & SONS 



LONDON: CHAPMAN & HALL, LIMITED 



1908. 



