Comets are always very impressive phenomena. Their appearances at regular, but mostly irregular, times excite people who see them. Astronomers have the obvious advantage of being able to see more of comets, and to study them. Their enthusiasm is reflected in the 50 papers in this book, written by more than 90 experts. The reviews in this book clearly describe a landmark in the history of cometary studies. Knowledge gathered up to and including Comet Halley are presented in two volumes. The first volume is about general aspects of observing and studying comets, where they originate and how their evolution develops. The second volume goes into the details of what a comet is: the nucleus, the coma, cometary dust, plasmas and magnetic fields. The book ends with a reflection by Fred Whipple about Comets in the Post-Halley Era. The book discusses all aspects of comets and is therefore suitable for use in graduate level courses. All astronomers and geophysicists interested in comets will find very useful and well-presented information in this book.

Comets are always very impressive phenomena. Their appearances at regular, but mostly irregular, times excite people who see them. Astronomers have the obvious advantage of being able to see more of comets, and to study them. Their enthusiasm is reflected in the 50 papers in this book, written by more than 90 experts. The reviews in this book clearly describe a landmark in the history of cometary studies. Knowledge gathered up to and including Comet Halley are presented in two volumes. The first volume is about general aspects of observing and studying comets, where they originate and how their evolution develops. The second volume goes into the details of what a comet is: the nucleus, the coma, cometary dust, plasmas and magnetic fields. The book ends with a reflection by Fred Whipple about Comets in the Post-Halley Era. The book discusses all aspects of comets and is therefore suitable for use in graduate level courses. All astronomers and geophysicists interested in comets will find very useful and well-presented information in this book.

Gathering eggs, planting crops, feeding hogs: firsthand experience of these grows more distant with each new generation. From 1914 to 1964, however, a West Texas farmer named William G. DeLoach quietly recorded this life-style. He described weather, plantings, harvests, births, and deaths in his diary. In doing so, he not only chronicled the life changes that everyone experiences but also kept a record of the developments taking place across the country and around the world.
The diary's editor, Janet Neugebauer, supplies interweaves explanations to round out the picture that DeLoach offers in his personal descriptions. Her history is a book unto itself that gives the context of the farming experience on the Great Plains. She explains the frustration farmers felt from overproduction, the price-cost squeeze, the exodus of young people into the cities, and the increasingly strong role the government played in what was shifting from a family's way of life to a corporate industry. Graceful and accurately detailed sketches by Charles Shaw provide the visual backdrop for DeLoach's story.
This work provides an overview of fifty years of national and international history as well as an intimate account of the life of an ordinary man in a changing world. Few farmers had time or inclination to keep a record of their day-to-day lives, but William DeLoach's perseverance has left us with a rich history of one family's triumphs and failures during half a century. For anyone who ever lived on a farm or visited relatives' farms, as well as for those interested in this aspect of our national history, this book will prove a real treasure.