"Herdbook, Volume 21" is a meticulously compiled register by the Ayrshire Cattle Herd Book Society of Great Britain and Ireland. This volume serves as an essential resource for breeders, historians, and anyone with an interest in Ayrshire cattle. It provides detailed genealogical information, lineage records, and breed standards vital for maintaining the integrity and quality of Ayrshire cattle lines. This comprehensive herd book offers a valuable snapshot into the agricultural practices and breed management techniques of the time. Its historical significance lies in its detailed documentation, making it an invaluable resource for understanding the development and preservation of this important cattle breed. Researchers and enthusiasts will appreciate the depth of information contained within, offering insights into the selection, breeding, and characteristics of Ayrshire cattle. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.