In Air’s Appearance, Jayne Elizabeth Lewis enlists her readers in pursuit of the elusive concept of atmosphere in literary works. She shows how diverse conceptions of air in the eighteenth century converged in British fiction, producing the modern literary sense of atmosphere and moving novelists to explore the threshold between material and immaterial worlds. Air’s Appearance links the emergence of literary atmosphere to changing ideas about air and the earth’s atmosphere in natural philosophy, as well as to the era’s theories of the supernatural and fascination with social manners—or, as they are now known, “airs.” Lewis thus offers a striking new interpretation of several standard features of the Enlightenment—the scientific revolution, the decline of magic, character-based sociability, and the rise of the novel—that considers them in terms of the romance of air that permeates and connects them. As it explores key episodes in the history of natural philosophy and in major literary works like Paradise Lost, “The Rape of the Lock,” Robinson Crusoe, and The Mysteries of Udolpho, this book promises to change the atmosphere of eighteenth-century studies and the history of the novel.

In the pantheon of air power spokesmen, Giulio Douhet holds center stage. His writings, more often cited than perhaps actually read, appear as excerpts and aphorisms in the writings of numerous other air power spokesmen, advocates-and critics. Though a highly controversial figure, the very controversy that surrounds him offers to us a testimonial of the value and depth of his work, and the need for airmen today to become familiar with his thought. The progressive development of air power to the point where, today, it is more correct to refer to aerospace power has not outdated the notions of Douhet in the slightest In fact, in many ways, the kinds of technological capabilities that we enjoy as a global air power provider attest to the breadth of his vision. Douhet, together with Hugh “Boom” Trenchard of Great Britain and William “Billy” Mitchell of the United States, is justly recognized as one of the three great spokesmen of the early air power era. This reprint is offered in the spirit of continuing the dialogue that Douhet himself so perceptively began with the first edition of this book, published in 1921. Readers may well find much that they disagree with in this book, but also much that is of enduring value. The vital necessity of Douhet’s central vision-that command of the air is all important in modern warfare-has been proven throughout the history of wars in this century, from the fighting over the Somme to the air war over Kuwait and Iraq.

It was first published in French by the Institut du Transport Aerien in 1998 and received very favourable reviews. Through the publication of the English language edition, this remarkable work is now accessible to many more readers around the world. In addition, the author has expanded the book with new sections and he has extensively updated it to bring the story of air cargo into the twenty first century, concluding with a look into the future. The author, Camille Allaz, served as Senior Vice President Cargo at Air France for 10 years which gave him an insider's close-up view of his subject, a privilege not enjoyed by many historians. There is no aspect of mail or cargo transport by air that has not been thoroughly researched and documented by Allaz, from the first brief transport of animals by balloon in France in 1783 to the vast global networks of the integrated express carriers in the 21st century. As a true scholar, he fits his narrative into the larger framework of political, military, economic and aviation history. This book should stand for years as the definitive work on the history of air cargo and airmail, and will be of immense value to the academic community, to the air cargo industry, the postal services, and to the general public.

Active solar systems for air heating are a straightforward yet effective way of using solar energy for space heating and tempering ventilation air. They offer some unique advantages over solar water systems, can offer improved comfort and fuller use of solar gains than passive solar systems and are a natural fit with mechanically ventilated buildings. They can be economical, with short pay-back periods and can act not only as space heating or ventilation air heating but also for water pre-heating, sunshading, electricity generation (with hybrid photovoltaic systems) and can help induce cooling. This design handbook takes architects and building engineers through the process of designing and selecting an active solar system from the six types presented, optimizing the system using nomograms and curves, and finally dimensioning the components of the system. Tips are offered regarding the construction and how to avoid problems. The book will provide essential design information for all architects, building engineers and other building design professionals and all those concerned to reduce the environmental impact of buildings.