BY ERNEST KELLY In Charge, Market Milk Investigations, Dairy Division, AND CLARENCE E. CLEMENT Market Milk Specialist, Dairy Division, Bureau of Animal Industry, NEW YORK JOHN WILEY & SONS, INC. LONDON: CHAPMAN & HALL, LIMITED 1923 COPYRIGHT, 1923 BY ERNEST KELLY AND CLARENCE E. CLEMENT PRESS OF BROOKLYN, N. Y. Wiley 9-15-23 PREFACE THE authors of this book have long felt the need of a textbook covering both the theory and practice of the varied phases of the market milk industry. With the hope of meeting such a need, they have prepared this book, which contains the results of much original investigation and experience, as well as the best thought of others. Full acknowledgment has been made, wherever possible, of references to the work of other writers and investigators. The business of producing and distributing market milk, with its present complexities, is a comparatively recent development of the dairy industry. For this reason there is need for a closer study and better correlation of its essential factors. It is the hope of the authors that this book may serve as a guide, not only to dairy students, but also to all others who are interested in the important problems confronting the producers and distributors of that most essential commodity-milk. The authors wish to acknowledge their indebtedness to the United States Department of Agriculture, through whose courtesy many of the illustrations in this book were made available. |
