This collection of letters sheds light on the political and military history of Ireland in the late 17th century. The letters, exchanged between Orrery and the Duke of Ormonde, cover topics such as the Williamite War, the Siege of Derry, and the construction of the Royal Hospital in Dublin. Orrery's witty and insightful commentary provides a fascinating glimpse into the era. 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 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. 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.